Challenges of travelling by train

Evening all. I just need to share this with you.

I commute to and from work and am currently on a fairly crowded train. My line have just introduced new carriages where the seats are closer together so if you don’t know the person next to you it’s fairly intense. I struggle with this most days and often want to scream, but instead develop a banging headache. And why is that as people get off the train and there are more seats, the person next to you doesn’t move? I find this so unbearable some evenings that I say excuse me and am ready to head to a clear set of seats I can see and then the person I was sat next to moves there anyway - long sigh.

Anyway, thanks for letting me share this with you. Does anyone have similar experiences with public transport?