I feel like I have tested a personal theory of mine. Three years ago I went to a dentist close to my house who informed me that I had (6) cavities. Really just (3) but they were all located between teeth so they count them twice.
I had him put a filling in one and then never went back for the other two. Here I am three years later.
Last night the filling fell out of the tooth he "fixed", the other ones have never bothered me and I feel have not gotten any worse.
So I ask myself...was it worth putting a bigger hole in my tooth to fix a seemingly small hole?