Yes... The thing is, the amount of people who disagree with you should tell you how successful you'll be in doing that

Huh, I didn't realize I had the ability to close posts by myself...

What I don't get in the specific case is why we can't have one math site and one physics site. The math site is gonna happen by the looks of it. In case it will be hard to find enough users to support a dedicated physics site, make one called natural science and include chemistry, astronomics etc as well. The site could have different categories for physics, chemistry and so on.

@Lundin Your suggestion can be a good one. However, my question is general, not limited to a specific case. By the way, as I explained in this site proposal, I cannot hope that we have an alive math community.

Why not? SE has five different math sites, why can't we have a single one? Seems to me that the potential for a math site is great, much bigger than some more niche topic sites that we've already launched.

How is it possible? If people are interested in such community they should vote for the proposal.

@FoggyFinder The point is that such a community may be disliked by several active Meta users; one may find many interested people other than them.

still don't see how it's related. If there are enough users who want (actively) new community then it should be created.

If you get them to upvote a proposal and it evens out the downvotes, we all know that the proposal is controversial but has users who would like to participate. If it's only downvoted, it's not apparent for the public that there may be users interested in participating.