I've been considering add one (or maybe two, haha) to my collection for a while now but I heard that they eat other snakes. I've yet to find any other information besides this single claim so I'm not really convinced but it would be a worthwhile bit of information to know about I would think.
Other than this, I've heard nothing but positive stuff on Womas (handles well and is easy to house) so I think I'd probably buy one even if they do indeed turn out to be cannibalistic.
/Edit:/ Also, how long do they live? Since they're a python, I would assume 15+ years at least but I'd like a definite answer since I haven't been able to find one.