The requirements are the bare minimum that will run the game usually at low graphics settings. The recommendation I and others give are for new computers that should last for many years and are able to run the game on high or ultra settings. Besides there are other programs and games that they may want to run in the future.
I only play Sims 4. I'm not a gamer and I don't care.l at all about playing on ultra settings. Gonna get the cheap one I found
That is entirely up to you. If you don't plan on getting new Expansions or The Sims 5 (if there ever is one) and don't intend to use it for other things that are more demanding it will probably be fine. If you want an opinion on a particular PC feel free to post a link.
