For goodness sake it is a Union not a cult. You are allowed to have your own opinions and exercise them. If you want to work absolutely do.
This is incorrect. Part of being in a union, and therefore being able to avail of the benefits that entails, is accepting the vote that is taken. Many people will vote against action, but by virtue of being part of the union, need to accept the outcome of the vote.
OP can choose in future not to be in the union.
If OP were not in a union, they would not be required to strike, and would have to decide themselves whether to cross the picket - in my case, I am not in a union (in a heavily unionised environment); I made the decision for a number of reasons, and in a strike situation, yes, I would work, and be clear about my reasons for that.
But that's entirely different to being in a union. I find it surprising OP hasn't realised this sooner.