If you're interested in making an informed decision, here are some good places to start trying to divine the "truth" (as far as it can be ascertained - by necessity, a lot of things are projections, plans, estimates, etc.)
http://openeurope.org.uk/blog/label/fact-check/
https://fullfact.org/europe/
http://blogs.channel4.com/factcheck/tag/eu-referendum
http://www.bbc.co.uk/news/live/uk-politics-eu-referendum-35603388
http://www.telegraph.co.uk/news/2016/04/28/eu-referendum-fact-checking-the-big-claims/
https://next.ft.com/content/133da9c0-f7f7-11e5-803c-d27c7117d132
Concentrate especially on what the various sources say about the one-way nature of the Leave decision. There is strong, broad agreement that it's not something that can be reversed on a whim if, oops, things don't work out.
Yes, it can be a significant effort to dig through so much material, since both Remain and Leave put out contradictory statements on just about every topic. From my reading of hundreds of articles over the last six months, though, I'd say...
A) Both sides are telling plenty of porkies, but the Leave side's porkies are more dangerous since the downside of them being wrong is that the situation gets much worse than it is now. The situation should the vote be to stay, however, is the status quo i.e. there might just possibly be an upside to Leave, but there's a very definite possibility of a big downside. Remain, and nothing changes. So, in that respect, Remain is much less riskier than Leave.
B) Leave's arguments often read as if they've been written by somebody with handy access to a time machine, e.g. references back to the situation in 1975 when the world was such a different place that the comparison is absurd and therefore unhelpful.
C) The inaccuracies on the Remain side tend to be on the order of magnitude nature of estimates (i.e. "this or that figure can't be as precise as they claim") or of over-cautious figures ("the losses would not be as bad as...") The inaccuracies on the Leave side, on the other hand, tend to be blunter: they state many things that are categoric untruths (e.g. the fear-mongering claims about Turkey and other countries being within a few years of being granted full EU access) or have no supporting evidence of any kind, yet present them as facts.
When you really get into the claims and counter-claims, Remain have made an overwhelming/compelling/strong/weak (delete as you interpret it) case for the "danger" of brexit. Leave have made a very weak to insignificant case for the "danger" of remaining, instead choosing to focus on the (possibly/probably/almost certainly) nebulous benefits that might or might not accrue from leaving.
Imagine that a doctor is advertising a miracle cure. There's a small (but maybe real) chance it will turn you into a long-lived, hyper-healthy individual. But there's also a very solid chance it will make you very ill instead (most of the leading lights of the medical profession are on record as concurring that the latter is the more likely outcome) Would you really be willing to take that bet and inject yourself with that cure if you were healthy and disease-free?
Because that's basically what camp Leave are asking the voters of the UK to do with the future of this country: gamble a situation that on the whole works reasonably well, albeit with the inefficiencies and unfairnesses that are inherent in any massive bureaucratic system, and stake everything on a big unknown.
Here's the thing: you absolutely don't have to take my word on any of the above. Just head off to the links I listed above, and form your own opinions!
No Edwin lets not imagine we are ill because the UK is not ill. Lets imagine we are in prison or in an abusive marriage ( institutionalised ) and all the analysis of being outside is financial doom and gloom, would we risk escaping and being free of an ever ending lack of freedom, simply for a roof over ones head, or 3 meals a day. We are not ill we are trapped and we need to have the courage to break free.