Vaccines, yay or nay?

So my son has gotten his vaccines at his 2 and 4 month appointments but tomorrow is his 6 month appointment and I'm REALLY considering not getting them from this point on. I have felt this way since the beginning but it's my gut instinct is only getting stronger..I've done my research but want to see what your opinions are. Please be nice, we're all just trying to do what we think is best for our little ones.