I see your thinking, OP, and I would probably be similar were I in the dating scene.
I agree that there are necessary jobs - such as traffic wardens - but I think the issue for me is when people are enforcing rigid rules, regardless.
We all know people who constantly and flagrantly park selfishly, wherever they like, with no thought at all to the rules or other people - and people like that really do need the full force of traffic wardens on their backs.
However, there are so many nuances and genuine reasons why ordinary folk might fall foul of them and end up with a hefty fine. What if you have a GP appointment and they keep you waiting ages; or you need to fetch your prescription, but there's an issue or complication that leads to a huge delay in you getting your medication?
What if you finish your errands to go back to your car in plenty of time, then your toddler throws a tantrum, your baby has a poonami and vomits everywhere? Maybe people will just say that you should always pay for an extra hour or two, just in case; but parking often isn't cheap. Moreover, a lot of council car parks have rules (in my opinion, immoral and deeply shifty), where you can't pass your fully paid-for ticket on to another driver, however long you have left on it. Get held up and stay 15 minutes after you've paid for and you'll get a large fine; but pay for an extra 45 minutes that you don't end up needing, so the council can sell the same space again and get double the money in - that's all supposedly above board and normal.
Others may strongly disagree, but I get the distinct impression that most councils do not have uppermost in their intentions the smooth running and fair use of parking facilities; but rather they are hot on getting the fine revenue in. The 'ideal' of ordinary people - everybody parking fairly and considerately, with no fines needed to be levied at all - would be a horrific nightmare for the councils!