Lock you up for what? Using Monero doesn't mean you're a criminal. Am I misunderstanding, or are you implying that caring about my privacy is a criminal act, and that paying taxes on perfectly legitimate income is (or would become) illegal?
that's the point: even if you're not doing anything shady you don't really know what sort of long term risk you're taking on if you're using something that looks to governments as if it's tailor made for money laundering
At what point do you say enough is enough, and embrace the idea that you should minimize your digital footprint whenever possible?
a technology specifically designed to allow untracable electronic monetary transactions is going to be many orders of magnitude riskier to use