Me, myself I never played offline, so I cannot really compare, but from my poin of view, when you are at home and cozy, it's really comfortable, instead of driving somewhere, registering there, being dependant on their breaks, the noises there. ANd in the end, you can win the same amount of money.
But maybe if I would go to an offline tourney, I would like it, too. Those two are different expereiences, and the more I think about it, maybe it is not really possible to compare them directly against each other, because they have their own pros and contras. Maybe it even depends on the type of person one is. Some people like being inside the society, inside the rush. Others prefer silence. Others again don't care, they are just playing their game and don't put too much thought in it, yes, maybe those are the best types. Being able to adjust in any circumstances and make the best of the situation, instead of thinking: I will always only play online, because it suits me more; or: I will always play offline only, because it suits me more; that seems kind of like restricting yourself to one habit.