A couple of things. Once you leave, you're not going back. So it's a profound decision with a big unknown on the other side. Your publication output drops to zero. You won't have time to develop your own program. You won't keep up with the literature. (Maybe you're not doing those things already, in which case you should try to jump ship).
Maybe you're an academic spouse, in which case you're probably living in an area that's already crowded with like minded PhDs.
Maybe it's not really all that much better on the outside. Depending on your field of course. Even as a grad student, I noticed that acceptance into grad school doesn't necessarily select for the traits that are needed in a research or R&D leadership role, such as being outgoing, self confident, and competitive.
Disclosure: Physics PhD, graduated early 90's, went straight to industry, never looked back.
Maybe you're an academic spouse, in which case you're probably living in an area that's already crowded with like minded PhDs.
Maybe it's not really all that much better on the outside. Depending on your field of course. Even as a grad student, I noticed that acceptance into grad school doesn't necessarily select for the traits that are needed in a research or R&D leadership role, such as being outgoing, self confident, and competitive.
Disclosure: Physics PhD, graduated early 90's, went straight to industry, never looked back.