My point was that since YOU are vaccinated, YOU are comfortable, but you - however slim - could still carry a variant and pass it along to someone who is NOT vaccinated, and someone who is NOT vaccinated can still potentially carry and give you a variant that you are not vaccinated against. Granted these scenarios may be very slim, but when it comes to the health and safety of my family, I will still practice safety until even more is learned about the vaccines, the variant strains and the various rates of spreading between vaccinated and non-vaccinated people.
I think of it like the flu shot. I get the shot and I'm protected against SOME flu strains - not all. Someone who doesn't get the flu shot can still give me a variety of the flu and/or I have the potential of carrying a variety and passing it on to them.
Again, it seems to all come down to the level of risk a person is willing to expose themselves and others to - personal choice. For me personally, the information is still not definitive enough with regards to these scenarios for me to feel "back to normal" after I get my 2nd vaccine.