I have asked myself over and over this question, whereever I live, Nigeria or overseas, I dont vote in elections nor pay taxes in Nigeria, do I realy have the right to bemoan the ills of the country I live in when I dont pay my taxes nor vote in elections! Is this aa fact of life?

Simple answer.
If you're of voting age in Nigeria and you dontvote, you lack the moral standing to criticize the leaders. It matters not if you're strongly convinced your vote will not count. In fact, the biggest achievement of pdp riggers was to convince the gullible that their vote doesn't count.
Edo state is a prime example of a state where people got tired of the pdp and kicked them out!

If you're working in nigera and don't pay taxes, then you lack the right to criticize