Again, it's not all about you - that's the point. If you sticking a mask on for a few minutes in crowded areas reduces chances of other people contracting Covid from you and, even if the difference is negligible, and it just makes some people feel a bit more comfortable, why wouldn't you? People...
Vaccines are great but we all know they aren't foolproof, we don't know who is and who isn't jabbed, I don't especially fancy getting sick and surely best not to risk giving the virus to others especially if you are on a rammed train. Common sense and common courtesy surely?
I guess everyone has to balance what degree of risk they feel comfortable with given their personal circumstances but it's a shame that the majority don't really give a shit about anyone else when its dead easy to stick a mask on for a few minutes.
Well of course if you want to be 100% sure then you stay at home but, as with everything, it's a question of balance. I find the non wearing of masks in the concourses as people eat, drink and talk face to face pretty odd behaviour for adults in the current climate but on balance I think staying...