Yes, it is true. Taxes on smoking for example, have discouraged people from smoking and extended the lives of many people. Likewise a tax on parking will encourage people to live closer to where they work, and to walk and cycle, making them fitter and healthier.
On the other side of the equation, tax pays for things like schools and roads and hospitals, which we are all glad of.
HOw will a tax on parking encourage people to live closeer to work? Not many people can chose where to work and chose where to live
I'm not saying all taxes per se are wrong, - like you say schools & hospitals, but taxing something just because you can leads to the empire building that councils are infamous for. They're doing this because they are skint, if they ever balance their books, you think they'll end this tax? No, they'll just find something else to spunk the money away on.
and Why do people need to be taxed so as to behave to extend their lives - it is their choice
more taxes are not a good thing - think about it