If people always agreed in everything, this forum wouldn´t be necessary.

Nobody should expect others to agree with them all the time, it will not happen, but you don´t have to agree on everything to be part of the community.

As a real life example, when I vote in the elections, I never agree with everything the party I vote for is saying, but I still vote for them because they are the closest to my beliefs even thought I feel disgusted by them in many matters.

My other choice would be to vote for nobody, which is what you are doing now, and have no voice. I rather engage and take part with those with similar beliefs to mine, than not engaging with anybody.