I'm probably watching more at the moment than I have since my school/college days, mainly due to not commuting for the first time in about 25 years and being at home a lot more.
So, currently, I'm watching EE, Corrie, Emmerdale, HO, Holby City, Neighbours and Home and Away though Emmerdale tends to be on the Weekend omnibus. I did try to watch Casualty again but find it so crap it's tough to sit through so tend to have loads recorded and not watched.
Why I watch the ones I do. Habit and loyalty I guess. I've watched all of them since I was a child/early teen (Corrie, Emmerdale) and all the others since their first episode. But rputine is a huge part of it, as doon as I have to start taping a lot of it, I lose interest in wayching unless it is hood. That's what happened with Brookside, Prisoner, Neighbours, H+A, Casualty at points in the past. In that respect, the 'big 4' are just lucky in that they fit my lifestyle in that those 2 hours are when I want something on that I enjoy but don't need to concentrate hard on as I prepare dinner,sort washing, iron, tidy etc. I doubt I would have kept watching them during low spells if they weren't convenient.
Holby is probably theonly one I make a real effort to see, recording it every week, including the signed repeat if necessary.. and that is because I think it is very, very good. It has highs and lows of course but even the lows ate pretty good compared to the other soaps lows.