<human>: Provide a brief overview of the text.

I am 25 years old and have had a few problems with one of my bottom molars. First, I got a pretty big cavity in one of my molars that is currently being "watched" by my dentist. I have already been warned that at some point in the near future I will need to get it crowned. Having said that my insurance will expire at the end of the year, so after my cleaning my dentist told me that we will continue watching it, but after telling them about my insurance expiring, they mentioned i should get it crowned asap because i have a "hairline fracture" that could get worse, infected, and lose the tooth entirely.

My question now is, should I go ahead with the procedure? I have read a lot about this online but am concerned over material of choice (gold vs. porcelain), damage to opposing teeth that touch when eating, any future complications (such as bad breath or flossing issues once the crown is in place), and the overall life expectancy of the crown?
<bot>: What is your best advice for this young redditor who's worried about getting a crown replaced two or three times by the time they're 40?