There is no use of posting them anywhere. Like others said, giving out merits is subjective and you may not find some post worthy of getting merit but someone else might feel them to be worth it. I would rather tell you to not be so critical about which post is getting merit and if your posts are not getting merits, which is what actually is bothering you.

Be a participant in discussions as much as your knowledge goes and be a good observer. Every system is going to have some amount of abuse but it is the best the admins could come up with to curb some of the spam in many sections of the forum and prevent low quality posters from ranking up.