As long as you don't leave, you are a part of it. If you aren't acting within your power to.mitigate the problems in it, you are not only part of the system, but a willing contributor to the problems.
If you aren't comfortable with the set of options, actively work to improve the set of options to one you are more comfortable with in the future. But, today, do the best with the options you have.
If you are paying taxes you are paying for this system, by not voting, you are simply having money stolen from you to have other people do as they see fit.
pretending that your abstainment from voting is somehow going to do anything but give ignorant people more power is senseless for anyone who understands how business/government works.
If you aren't comfortable with the set of options, actively work to improve the set of options to one you are more comfortable with in the future. But, today, do the best with the options you have.