YABU. As with most posters, sitting in a nice pub - or cafe or wine bar - taking time for myself is a real treat to me.
I work f-t and have my lunch on my own most days in a cafe near work; I love disappearing for 40 minutes and reading my kindle while I eat a sarnie and drink a coffee. Is the difference that you don't like being drinking alcohol alone, not coffee?
When I was (much) younger I worked in all sorts of local pubs, real 'old-man's pubs' as they were dubbed. And yes, there were some sad, lonely old men propping up the bar every night, nursing their pints and making sad, cynical jokes to each other. They were usually older (over 50 at least), single and unlikely to meet a woman. And yes, I felt some pity for them, although they did have a camaraderie with each other, although they only ever bought their own pints! There were also the usual men (usually of the same generation) who did have a wife and home but who went to the pub every night out of habit. I often pitied the wife in that case, but I don't know any couples of my generation where one of them drinks in the pub on their own every night.
There's a big difference between someone escaping the rat race and a busy life for a bit of sanctuary and me-time in a classic British pub, enjoying a nice cold beer or glass of wine and a read of the paper without disturbance, and those old geezers sadly propping the bar up and eking out their coppers on half pints for decades at a time.