Great acceleration helps make being a terrible driver that doesn't know how to merge less uncomfortable for you at the expense of whoever is behind you.

You can roll through the ramp doing your best impression of a semi truck at 20mph and then when you realize you're about to have 500ft to merge into traffic that's going 60-70mph you can mat it and be going traffic speed in that time.

And the best part is that everyone will think the work van behind you that wanted to carry 40mph through the ramp but couldn't because you were in their way is the one who's doesn't know how to merge when they can barely do 45 by the end of the ramp.

When a 400bhp ICE car rolls up next to you at the lights and you need to prove your superiority to them.

Based on my observations of Tesla owners anyway

18-wheeler not noticing you in an intersection, for instance.