No and Yes if that makes sense.
No I don't regret not vaxing my DS who is 2.5 at this point in time because he has a lot of allergy and immune issue and I feel had I vaxed him, he would be even worse off. I also have strong autoimmunity issues in my family which is another reason we chose to decline. There are certain diseases that do scare me and I wish I could just trot on down to the pedi and get DS vaxed to have "piece of mind". But what I realize if that piece of mind is an illusion.
If I did that, went down and chose the 1-2 vaxes that I would even consider, and My DS's issues got worse or he had a serious reaction (which given his issues is a very real possibility IMO), I don't think I could ever for give myself. Parenting is a joy and a nightmare IMO because all any parent wants to do is protect their baby from harm, and they make the best choice they can given the information they have, and even then there are of course no guanantees.
I will never say that I will never give DS or any future child a vaccine, I always will reevaluate the info and take into consideration our personal health circumstances, but right now, I think (for my child) the risk would outweigh the benefits.
I don't subscribe to the social responsibility arguement. I do however think it is a parents' responsibility to keep their child home when they are sick. This sadly seems to be an exception rather than the rule.