I love it, I love the opportunity to sit and think to myself and enjoy the atmosphere. I used to do it a lot when I was at university - study and eat, whereas if I was with people I’d end up chatting and either not eat, or not study. This was in a cafe though, not a full on restaurant. I loved the opportunity to people watch. I did get a few people talk to me, ask me what i was doing
which was mildly annoying but that was after I became a ‘regular’ in there and recognised all the equally regular elderly peeps hahah, never once did I get the vibe that people were thinking ‘omg what a saddo’ lol
Besides, all the other people around me are boring, would I really give a
tit if I walked in and someone was eating alone? No. You ain’t that special!

that’s what I used to say to myself when I first started doing it.
I think people think sitting and eating alone is sad. I see it as a mark of self confidence.