I agree that that's a bit cruel to force them to eat like that. Penny was on a two-mouse diet with a ten to fourteen day break in between for a bit before I started to get her on a one-mouse-a-week diet. She killed and ate her first mouse, then after about 10 minutes I'd offer her another if she still looked hungry. I pretty much played it by eyesight with her feedings and if she was hunting her cage, she got a mouse, which made the switch from two to one a lot easier. I don't understand why anyone would force a snake to eat unless they were losing far too much weight, and even then I seriously frown on that because that's a lot of stress to put them under. I mean, I wouldn't like it if someone held me down and forced me to eat if I wasn't hungry. So, yeah, I think it might shorten their lifespan from the stress. And make them fat, which is just as bad.