Because driving a car off a cliff or at 150 MPH through a city in real life would get me dead or in jail for eternity, especially if I run over 6 pedestrians on the way.
Also because warp capable spaceships with VTOL takeoff and hypersonic superbikes haven't been invented yet, dragons don't exist, and there are various other impossible things that video games let me do.
You can be as irresponsible and stupid as you want, and it either doesn't matter because you respawn or reload, or the game gives you points and money for it. Saints Row IV rewards you with cash for going on an instanced mech rampage, for example.
Also because warp capable spaceships with VTOL takeoff and hypersonic superbikes haven't been invented yet, dragons don't exist, and there are various other impossible things that video games let me do.
You can be as irresponsible and stupid as you want, and it either doesn't matter because you respawn or reload, or the game gives you points and money for it. Saints Row IV rewards you with cash for going on an instanced mech rampage, for example.