The reason why I like first person in sims 4 because of more than just the immersion, but because it is different and unique, because I like to play other ways, 3rd person gets boring at times and I wanted to try something different, nottin wrong with looking through the eyes of a sim (even though some parts of the experience can be awkward lol). First-person perspective does not work in all genres nor all games and I feel The Sims is better off without it as it doesn't add anything to the core of what makes The Sims, The Sims. My thoughts, as well, I am not the Sim, I am directing the Sim in what I call an interactive soap opera through their virtual lives. But the difference is I don't mind trying something completely out of character for a Sims game as long as it's a spin-off.

Which is why I tried it once and then I don't think I've ever used the cheat again. Not really ideal for a Sims game in my opinion but the option was nice but again not how I would prefer to play. I think it was in The Sims (PS2) or The Sims Bustin' Out (PS2) which might have been the first Sims game to incorporate first-person perspective, though, through a cheat. I am going to guess the first-person mode in TS4 is being used as an introduction for what's to come in the future for The Sims franchise.

I prefer how it was introduced in The Sims (2000), got even better in The Sims 2 (2004) and refined the 3rd person camera angles in TS3 (2009).

Sims 3 first person mod