Do I think I pay too much tax? Yes and no. I'd like to pay more, but I have basics to take care of first.

I think that taxes should be reserved for those with some level of financial stability/independence. I don't know how to come up with a benchmark for that, though.

If I earned what I do now in a low cost of living environment, then I could pay 80% and still get by just fine.

Put simply, as a UK citizen, to a very good approximation, a worker earning 50K pa pays the same amount of tax whether they own a 5 bedroom home outright or whether they live in a tent. (Council tax / property tax exists but is generally small).

I don't think that's an efficient policy. It makes bootstrapping much more difficult than it should be.