Here are 61 reasons why Remainers are fighting to stop Brexit and stay in the EU. (Brexit is nothing like a football match. We can't just "get over it" because we lost. There's far, far too much at stake!)
1. Longest unbroken period of peace between European nations in history

2. Free trade deals with over 70 countries
3. Single market and customs union membership that gives us unfettered access to the largest trade block in the world
4. Just in time manufacturing that supports millions of jobs, thanks to no customs checks or complex procedures

5. Support for the Good Friday Agreement & active promotion of the Irish peace process
6. Freedom of movement that allows UK citizens to travel, work, study and retire anywhere in the EU
7. Scientific and academic collaboration
8. Shared space exploration

9. Participation in the Galileo GPS satellite cluster
10. Driving licenses valid all over the EU
11. Car insurance valid all over the EU
12. Pet passports that make travel with pets easy
13. Simplified fixed compensation scheme for flight delays & cancellations

14. European Health Insurance Card (EHIC)
15. Mobile roaming (calls, texts and data) at home prices
16. Portable streaming services (watch Netflix etc. all over EU)
17. Erasmus student exchange programme
18. Simplified VAT reverse charge mechanism for those selling across the EU

19. Safer food
20. Clean beaches
21. Enhanced consumer protection, including for cross-border shopping
22. Horizon 2020 (funding and assistance for over 10,000 collaborative research projects in the UK as part of the world's largest multinational research programme.)

23. Training courses for the unemployed funded by the European Social Fund
24. Disaster relief funding e.g. the 60 million euro we received for flood relief in 2017
25. Free movement for musicians and their instruments, bands and their equipment, artists and their materials etc.

26. Enhanced environmental protections
27. Court of last resort (ECJ)
28. REACH regulations & EU Chemicals Agency, improving human, animal & environmental safety around chemicals
29. Safer medicines thanks to pan-EU testing regime

30. Security cooperation and sharing of crime/terrorist databases
31. European arrest warrant
32. EURATOM for medical isotopes
33. Support for rural areas ignored by successive UK Governments
34. Better food labelling
35. EU funding for the British film industry, theatre & music

36. European Capital of Culture programme, which has boosted cities such as Glasgow and Liverpool
37. Service providers (e.g. freelance translators) can offer their services to clients all over the EU
38. No UK VAT or duty on imports from the EU (great for online shopping

39. EU citizenship (it's a real thing with real benefits - look it up!)
40. Cross-border collaboration on taxes, to hold huge firms like Amazon and Facebook to account more than we otherwise could
41. Venture capital funding and startup loans

42. Legal protection for minority languages such as Welsh
43. Mutual recognition of academic qualifications
44. Legal protection for foods of geographic origin, e.g. Melton Mowbray pork pies
45. No credit and debit card surcharges

46. EU structural funding (eg. £2 billion to Liverpool) with matched private funding requirement
47. Supporting and encouraging democracy in post-communist countries
48. A bigger, stronger presence on the world stage
49. Use of EU queues at ports and airports

50. Products made or grown in the UK can be sold in 31 countries without type approval, customs duties, phytosanitary certificates etc.
51. Protection from GM food and chlorinated chicken
52. Objective 1 funding for deprived areas and regions

53. Financial services passport, enabling firms in the City to service the whole EU market
54. Strong intellectual property protections
55. University education in other EU countries at "home student" rates (many still have free universities.)

56. Mutual recognition of professional qualifications
57. Consular protection from any EU embassy outside the EU
58. Baseline of worker protections (which we can also improve on)
59. Keep open the EU market to which we send more than half the fish we catch

60. Enhanced medical research prospects
61. A friend to cosy up to against the might of the USA and China

All the above costs just 34p per person per day. Thirty four pence! The UK Government only spends 1% of its budget on our EU membership.

So now you have a crystal clear understanding of why we want to stay.

If you still want to leave, why?
What's in it for you personally?
How has being in the EU harmed you and your family?
What do you stand to gain by leaving?
Are you sure, absolutely 100.00% sure, you'll get it?

BTW, on your way out, can I very gently steer you towards my book? "Slaying Brexit Unicorns" busts two dozen Brexit myths, and examines the reality of no deal and trade on WTO terms. People who've read it seem to like it. Out now on Kindle & paperback.
https://www.amazon.co.uk/dp/B07Z1FTRQW/?&_encoding=UTF8&tag=bre3-21&linkCode=ur2&linkId=5bc2de1ee25940e991b9b24138ffddaf&camp=1634&creative=6738