When has legality had anything to do with what is a 'better' car. Pretty much every car sold in the USA is 'street legal'. Street legal is just a metric, much like a quarter mile.
And no, you can't compare sushi and Ice cream, its a false dichotomy. My kids are always playing this game "What would you rather have, your foot or your hand cut off" (or some other similar comparison). Of course the choice you would like to say is 'neither'.
I don't want to live in a world where I have to eat just ice cream or sushi every day. I don't want to live in a world where sushi or ice cream just isn't available. I like having both options available when I want them and there is no need to pass a value judgement on which is 'better'.
Now you could ask me what my preference is and I might say "I prefer sushi" which is a completely different argument.