It really depends. Many people are seriously turned off by the internal political dynamics of academia. You might end up working with a PI who has bad relations with some other PI and their conflict ends up making your work impossible, for example. Insane levels of political infighting are the norm, and it's not too surprising, as far more PhDs are minted every year than new Professor slots can accomodate, so, expect a lot of nepotism.

You can also find yourself working as an underpaid lab tech on some project for your PI's startup company or something like that as well - many PhDs just follow the director's instructions with no 'original research' to speak of. Literally the work could be done by an undergrad part-time lab tech paid minimum wage, which is about the deal the PhD gets.

On the other hand... if your field is very new-tech-heavy, sometimes the hands-on experience gained working with cutting-edge technology in a well-run research laboratory is invaluable.