I largely share that point of view, but I view leaving the EU as a bad thing since I think it's extremely unlikely that the UK parliment will unilaterally aboli

I largely share that point of view, but I view leaving the EU as a bad thing since I think it's extremely unlikely that the UK parliment will unilaterally abolish tariffs after we leave. We're likely to end up with more tariffs than when we started. Brexit is a step towards the global optimum, but we're going to get stuck at a local pessimum.