Do I need to get my cavity treatment done again?

About ten years ago, I had my molars completely covered with gold for cavity treatment, and now there's a slight gap between my gums and the crowns.

A few months ago, I visited the dentist for a cleaning, and the dentist told me it would be better to do it again.

They say it's better to redo the full-mouth cavity treatment at regular intervals rather than continuing indefinitely, but I really dislike going to the dentist.

I don't want to do it because there's no major discomfort, but they say that the gums and the space between the teeth are slightly open, which could allow cavities to progress again inside. I'm 고민되요 about what to do.