If we hadn’t already voted, I would still vote Remain, this is because we were in a very strong position in the EU, and I believe in the EU.
If we had to re-vote, I would vote Leave. This is because the strong position that we had (that I thought we should preserve) has now been decimated, and can never be regained. If we stayed in the EU now, it would make no sense, after all we’ve lost. If we must swallow that bitter pill of economic agony for c. 5 years, then so be it, because once we have, we will surely (hopefully) be in a better position than if we rejoined now (but I believe, a worse position that we had before the vote).