In other countries, taxes are complicated (no citation needed). There's income tax, but there are also social security payments, industry-specific taxes, etc. And you have to pay for your own education and healthcare! Danish tax is simple and all inclusive. It is around 50%, which is about the same as in US if all hidden obligatory payments are taken into account. But it is all inclusive: all education and healthcare…
Had the same feeling about Australia vs France. In Australia I'd pay $120 for a tax agent (~1% of my income tax), it would be over and I'd be happy about it. In France I feel like I'm being chased, because it's such a socialist country: I earn €2000 per month after tax, I feel like I'm being told by the tax administration that I'm a thieve because I'm rich, even though they're the ones who attempted to double-tax me…
Sometimes one can be in odd situation that don't fit well. It's also been my case some years ago when exercising and selling US stock options not considered as such in France (so taxed as salary, ouch...). Just ask them ahead, in my experience they reply and are clear. And I sent them the data with explanation on what I did, so they could correct easily if I misunderstood. Always been fine so far.
Maybe you had worst experience and decided to move elsewhere, but no need to paint a bleaker picture. One can question the level of taxes and how they're used, but the payment itself is simple for most I'd say.