Jennifer Aniston has theorized that it's sometimes good to split up.

Jennifer describes her new love, actor Vince Vaughn, he's "the cream of the crop".

Jennifer's theories on why so many marriages have the shelf life of a pint of milk. Speaking from her own experience--sometimes the best thing is to split up.
"Who knows if people should have stay together? My parents certainly needed to get divorced - and they did. Other couples stay married ... and they shouldn't."
Then she adds, somewhat wryly:
"You have to put a lot of work into it and exhaust every option before you split up." Reported the Mirror.
Source: mirror