You've got that much right. This place whole be a whole lot more boring if it weren't for this Battle Dome.

[Which would be exactly why he spends so much of his own time here training-- lack of anything else to do, plus a desire to stay in peak condition.

But if Vegeta thinks Gai was planning on fighting him, he'd be wrong. Instead, he just heads right over to the simulator to start programming in a scenario; after a few moments, eight generic thug-like opponents appear in front of them, one armed with a handgun and the rest either bare-handed or with knives.]

Sorry, but I prefer facing off with more than one opponent at a time.