Just because they're not as "easy" doesn't mean that they're impossible to keep either. I've had/have several girls and they're not difficult, you just have to be diligent about their diet, supplements (they go through more calcium, obviously), making sure they have access to a laying bin, etc. But there are several great blogs out there that explain how to keep egg production low or non-existent by controlling temperature and diet, and there is a great video in the breeding section on how to make a laying bin. As long as you have that under control you're off to a great start.
Like I said, from my clutch of babies I ended up keeping two sisters because I find female panthers to make adorable, sweet pets, like their mom. You just have to read up on them, so you know how best to meet their needs.