You're right,taxation is a good idea,but only in theory. I often ask people:"Who do you pay taxes? Don't you see that it is basically the way govt is robbing you?" and there are two replies I usually get:
First reply:"Well,it's my duty as a citizen to pay taxes",to which I say:"But you can't choose if you can pay taxes or not.You either pay them,or you go to jail or have to somewhere else to pay taxes to someone else.Tell me that's not theft!"
Second reply:"If nobody paid taxes,govt couldn't fund itself,and it couldn't exist",to which I smile and say:"Hahahah,exactly! Now tell me,how do you call a thing or an organism that can't live on it's own,but instead has to live off of someone else's work to survive? A parasite! That's what government is!"
Now yes,I understand,not all the taxes are used for the politicians' personal needs. They are used for public services,like building roads,or hospitals etc. But here's the thing,if you're gonna have taxes for public services,why involve the govt? Why not just gather all the citizens,all of them pay a little bit(but only if they're able to do so),and so make sure all the taxes are used for the mutual goal and none of it goes to the parasitic lifestyle of politicians.
To sum it all up: Taxes would be amazing if they had nothing to do with the govt,and if they were optional. The way they are now,they're just one of the many ways govt controls the people and reminds them they can do whatever they want with them(people) whenever they want.