I have no problem with sharing (even copyrighted content) as long as you aren't explicitly or implicitly saying "I made this".

In other words, link back to the source and clearly say "This is from....". So people can go support the originator.

Resteeming actually brings readers back to the original article so it's fine. An upvote on a resteem goes to the creator.

If your feed is all GOOD resteems, that is valuable curation and deserves the followers.

If it's all bad, lazy resteems, u should eventually lose your followers or they won't engage your posts or comments (so they're useless)