Dental concerns

I just hate the sounds of this...I am just now exploring this aspect, and the thought of having to pull any tooth that has dental work, just freaks me out. Why does it seem that it is all or nothing. I hate it cause I really don't have any teeth that hurt, and most of the work done was from dentists trying to make $$$$$. Never had a cavity til 19...and then it was only "soft" so I have 6 fillings. I did what I thought was right...had them "filled". Shortly after I had all my wisdome teeth pulled at once because they were causing a mis alignment of my other teeth. I figured that if I had one side done at a time that I wouldn't come back for the other. Couldn't eat solid food for a month. For nearly a year after I had something that kept cutting my cheek. the dentist said it was some "fibrous scar tissue". Turns out after it festered, it was a big chunk (chip) of tooth the dentist left in the socket. Then a filling broke because they ground to much out. So here comes the gold crown...Then I had a root that was being reabsorbed so a canal/crown was done to save the tooth. Shortly after I developed a case of vertigo which the MD;s had no Idea what it is. Actually started me on my road to "being my own physician". I have read an account that sounded quite similar to mine,a nd the individual stated that it was poisioning from a root canal they had done. GREAT. So the dental concerns me. All told I have 6 fillings, one gold crown, and one root canal with gold crown. I am at a point were the fillings have worn, and the dentist wants to replace them with composite. I am sure if you have them replaced, they would grind them out, and the mercury would go everywhere in your mouth even worse. So having "composit fillings" probable isn't a good thing either. Just not sure what to do...maybe more info is the key. Got any good suggestions or sites to get information.. I have been to hugs site.