Would you invest in a better PC for a next gen sims game?

My boyfriend works in IT and the computers we own all have good specs and can handle most games that are out today (haven't come across anything I can't run yet), so I don't know if they'd need to be updated. I guess it would depend on what changes in the years between now and the next Sims. If necessary, I'd get a new computer or upgrade one that we already have though.