I don't think you need to worry about not using every little feature. Fun is what matters. And maybe you feel like trying some unused features a bit later. You've got all the time in the world and this way you still got somehing new to discover even after years.
At the moment I haven't tried out every feature myself because I started to play The Sims 4 only one year ago and bought many packs in quite a short time. But so what, I played The Sims 2 for about 15 years and this way I never got bored with it. :D
