Pretty much an opposite to the question made in this post. Now, many people on this sub are enthusiasts so this question may sound like a little bit crazy to ask on here. However, you may have a spouse, parent, friend, or some other person you know that isn’t really that big of a car person and may feel differently. Maybe mom is terrified to get behind the wheel of your 707 hp Challenger Hellcat, for example. Even among some enthusiasts or petro heads, I find some of them will set limits. I know some people will get behind the wheel of a 305 hp Civic Type R, but feel the current American Muscle/Pony cars are too powerful for their platforms to effectively use that power (as opposed to something like a mid-engine supercar).
I drove a friend’s A45 AMG with ~450hp and that felt like more than enough! Granted, mine is a little underpowered but it’s just enough for my driving and commute. The A45 just felt like bonkers.