There´s also the "play at home" and "sound like my favourite albums" factors.The pokemon effect. Gamification. Gotta catch'em all! I know I am like that.
Maybe I´ve got an AC30 but can´t put it to its paces at home... a good modeler will allow me to get close to that (at practise volume). Of course, it´s never going to be the same as using a real amp, but that Boss thing of making it harder is something I don´t like. They sound good, sure. But I prefer to know that the sounds I´m getting are closer to the real amps. Others will not care about that, and I perfectly get it.
But yeah, I´m with you in that We´re always wanting more. It´s another way of having fun...