If I post high quaility massages but none of the users give me merit. What should I do? How can I get merit?
I can publish messages for years and not receive anything
That's the only way. If you are not getting any merit for years, then your posts are most likely the problem - and not the users. Getting merit isn't hard.
Maybe stop with bounty entries since they are 80% of your post history. And you will NEVER get any merit for those.
I don't mean bounty entries at all. Should I stop doing bounty for merit? Of course not. I just started earning merit. I've made 2 posts 300 words each and got nothing, I thought I posted usuful info. One of the post disapeared. I think it's not so easy to earn merit as you said. Anyway thanks for the answer.