Free margin and easy options is why people stick with RH.
Plus it's the easiest app
I'm not going to recommend RH to anyone because I would hate to be the catalyst that actually got them to join, and then the potential culpable party if they end up getting hacked (
that being said, if you don't want to join RH, PM me and I'll PM you my referral link so that we each get 1 free stock).
YouTuber Andrei Jikh, who I put faith in, uses RH. He might have other platforms as well, but RH seems to be his main go to.
Here is his latest video, and also one of the videos that he made regarding people getting their funds stolen from RH. He is primarily a dividend investor.