No vaccinations at all?
Well, what has happened so far? Did you get any disease that other people are vaccinated against?
I am not 100% against vaccination, nor 100% for all vaccinations. I decide on a case by case basis.
I got Pertussis even though I HAD been vaccinated against it. They are not all 100% effective, BTW I did recover. And nobody caught it from me. I also know a woman who got Pertussis while she had a newborn baby. The doctor told her to nurse him at least until she recovered, to strengthen his immunity against it. Yup, even sick mothers, or especially sick mothers, are told to nurse the baby to protect it from the illness.
Now, polio is pretty much wiped out in the US. But if you travel somewhere that polio is endemic, you might catch it, though probably not if you wash your hands and don't share drinks or food.
So if you decide to travel to a country where some disease is endemic, you might consider vaccination. In fact, the US government requires it in some cases.