Instead of trying to convince people not to be part of politics the way you are doing it post how you personally are free by not being part of the political process. You would win a lot more converts to the ideas. If you can live your life free DO IT and show others how it is done. Until then few people are going to believe dropping out is going to work.
Because this isn't a thread about methods; rather, we're discussing the reasons why someone would want to opt out. I'm more interested in talking about ideas right now as this is the Political Philosophy sub forum.
Besides, some methods are dangerous to one's physical freedom, if you catch my drift. It's unwise to post it on a public, searchable forum. Some things you only share with close friends and family. But since you're seeking, I'll share a few...some I've done, others my friends have done.
Stop voting
Don't endorse political candidates
Don't participate in any political or civil campaign
Refuse to participate in the hero cult of police and military
Turn your TV off
Homeschool your kids or send them to a private school
Leave or don't join nationalistic organizations (e.g. Boy Scouts)
Don't give to "charities" or funds that support civic organizations (encourage private enterprise instead)
Grow your own food
Barter more
Reduce your debt
Shall I go on? There's lots of little practical steps one can take and it will begin to have a cumulative effect.