Accelerate faster than a combustion sports car, no expensive engine maintenance etc. And since the only major cost of electric cars is the battery they will go down in price as we get better batteries and very likely get cheaper than combustion cars pretty soon. Electric engines are super simple, only reason combustion cars are even competitive today is that we have invested so much research into building combustion engines.

Cheaper fuel. Refill at home. Cleaner air. Cheaper to maintain (no oil changes, air filters, sparkplugs, less wear on breakpads). Quieter.