All a question of balance really. I have known several anglers who have treated fishing as the be-all and end-all of life and to a man they ended up with fishing 'burn out' and stopped fishing altogether, or pretty much close to it.
In my case it could be said I'm fanatical just because I fish (up to) 5 times a week and if I'm not fishing then I am probably thinking about it, but that's not how it is. True, fishing is very important to me and it is my passion, but it has to be balanced with time I need for other things and more importantly, my wife. It is why I tend to fish from early morning to around midday (which leaves me plenty of time for the social side of life) and it doesn't affect anyone else - my wife included!
During my fishing sessions my wife has a very full social life with friends, keep fit, looking after a large garden, garden club committee, plus tons of cooking, jam making etc. etc. but we still find time to go out for lunch once a week or so, or if not this then a visit to garden or similar.
OFC Disorder: I really cannot see why being without a girlfriend and living with his mother should be a problem if that's what suits him. If he lives at home he probably has time to burn and with no girlfriend or wife he can suit himself 24-7 with only his mum to answer to. No doubt it is a situation that seemingly suits both parties.......
Ask many fishermen who love the sport and wish they had more time to go fishing, but they have young families probably, and a wife who wants to see her husband at weekends. If you marry, that is the choice you make and with it comes commitments. You cannot have it both ways!!
If you're an avid fisherman who wants to spend every free hour on the bank, then best you tell your wife BEFORE you tie the knot!!
BTW; If I have a choice between going fishing or visiting relatives.................well, what can I tell you..
ps I wouldn't want my wife coming fishing with me as it is my time to be alone. Thankfully my wife wouldn't want to spend any more than an hour on the bank!!!