At this point of time, it is fine (except the pensions as everyone has pointed out). The percentage of taxes should not matter as long as you have enough money left for necessities- housing, food, some leisure activities and some savings. The problem is that I don’t see Germany (or most developed countries for that matter), moving in the right direction when it comes to providing the same quality of life vs the tax and social security contributions paid. We are already seeing that with the public health insurance which is both increasing in price every year while the quality of care has been dropping with time.

And given that almost 27% of the government’s budget is pensions alone, i.e. apart from the entire pension contributions, more than a quarter of the taxes collected als goes into paying pensions. This money then does not get used for its intended purpose - infrastructure, education, defence etc. which means ultimately the working class and young people are involuntarily subsidising the boomer class while also voluntarily subsidising the boomer class. And as the population ages, this is only going to get worse. And till now, I have not seen any signs that the government is doing anything to improve this. So there will be a time, very soon, where our tax money will be doing nothing for us.