Finally, and this is my single biggsst reason for wanting to Leave - the EU is, at it's very heart, a closed, navel-gazing, self-absorbed protectionist customs union. You can hear it in the subtext, or even overt tone, of Brussels bureaucrats over Brexit with threats of tariffs and other barriers unless the UK accepts their dictat over freedom of movement and "contributions" to the budget. It's small-minded protectionism at it's worst, designed to work for those on the inside at the cost of everyone on the outside.
Well, okay then. My vote is for the UK to be a smallish but economically still significant player in tne big, wide world rather than a coward huddling behind those protectionist barriers, afraid of the competition from the US, or China, or other developing and browing powers like India, China, etc.