[fChk]

Vaccine does not stop virus from infecting you and i have already mentioned i think you missed or i am getting your point wrong since you are talking about spreading it among your own people that can be done even after getting vaccine.

So it should be totally upto me since it will only harm me and no one else.

You can be infected even after vaccine.

Being vaccinated doesn't stop you from getting re-infected is indeed TRUE, because what a vaccine does is prepping(/boosting) your so-called acquired immune defenses (ad-hoc antibodies, T4-Cells and T8-Cells) to get ready for when the virus is inside your body (not outside!) This is why a vaccinated person generally either shows mild symptoms when getting re-infected or shows no-symptoms at-all (ie asymptomatic when RT-PCR tested.) Because those antibodies, T8-cells and NK-Cells (Natural Killer Cells) kill it once inside.

A population is a mixture of vaccinated and un-vaccinated folks. When a virus reach that population it will thrive on the unvaccinated part of that population while the vaccinated portion serve as a shield, because when it gets infected they don't spread it (because the virus load is quickly neutralized inside them.)

This is why when an unvaccinated person claims that 'getting vaccinated should be his choice since getting infected by a virus will only harm him and no body else' is false!

This why governments across the world are trying to get their populations vaccinated in the hope of reaching the so-called 'herd immunity' (ie 70-80% of vaccination rate) which should serve as the SHIELD (as I said above.)

I hope it's clearer now!