I hardly ever do unit testing. It's almost always integration testing with code that uses real implementations against a testing db. This is only possible because my code is decoupled in the right places to enable this sort of no mock style testing.

I don't strive for 100% coverage and I hardly ever do TDD unless I'm working on something hard to solve.

Tests give me confidence and results in less time repeating the feedback loop. I might have a slower "coding speed" but I have fewer regressions during refactoring. Less bugs to fix while iterating. And less back and forth with stakeholders to ship something. Overall I'm way faster with tests than without.