You're right. The issue is a very complex one yet many see it as black and white.
I've asked in here a couple of times if anyone who has made a decision if they can see any downside to their choice. No one has responded.

There are very few decisions, if any, where there is not a downside.

..are you completely sure that this devil and his actions are not being altered and misquoted for particular tastes that you do not enjoy.....?

Ah! The Cliff Richard gambit, as we chess players say.

..this decision should never have been given to us to decide, the people who should decide this huge event should be the ones who actively use the system we have in place now regarding trade etc, immigrants coming in are far more likely to study and work hard because they have fought nail and tooth to make it, nothing to do with hand outs.
Jeremy Kyle has reassured me beautifully how sad and extremely stupid people here can be, I just hope they have spent many months Scurraging the streets looking for them.

The downside of leaving would be the potential economic strife that may occur. If there is any, I don't believe it would be anywhere near as serious as the 'experts' have said. They'll also be a price with paying for democracy and control over our own country even if they went on for 10 to 20 years (which I don't believe they will).

Other than that, can't think of anything important.