And you are exactly right. The OP does have one reasonable point in his post - now that we've knocked out the 'big' childhood infectious diseases (measles, mumps, rubella, polio, diphtheria, pertussis, tetanus and haemophilus) through vaccinations, we are working on immunizations where the cost - benefit ratio is much less clear.
Hepatitis B, Varicella (Chicken pox), pneumococcus, rotovirus and Hepatitis A are all safe and effective. Whether or not they need to be given to everyone is an interesting question. Hepatitis B is certainly reasonable for persons living in areas where the virus is endemic (South Asia in particular) and is reasonable for persons who plan on being drug addicts or health care workers. The problem is that most people who end up in the former life style aren't the type to seek medical attention early on. Varicella immunization, as you point out, wanes after a decade or so (as does tetanus, diphtheria and especially pertussis) and chicken pox is a largely benign illness (although complications do occur). The pediatric community has decided that a nuanced approach to this won't work so it's "everybody gets everything all of the time".
This appears to be pretty safe (again, the number of distinct antigens in all vaccines is dwarfed by the number of different proteins presented to your immune system every time you go out in a crowd) but there are theoretical concerns. You can make the argument that antigens presented by a vaccine are qualitatively different from your garden variety protein. You can also note that autoimmune diseases (where the body overreacts to antigens) is common, sometimes severe and undoubtedly increasing in the Western world. Thus, one can be concerned that pissing off the immune system could cause problems.
It, however, has never been demonstrated that vaccines are causally related to any autoimmune phenomenon or disease.
So, in the best of all worlds, one would have an informed discussion about the risks and benefits of all 14 recommended vaccines. Which would take a couple of hours. Which, of course, doesn't happen.