this is all true, but especially this part, even though i "thought" i new it, in reality its actually a lot more than you think, the routine, routine and more routine.
the endless worry, not always, but going out for the day ? who feeds him, be back for his 7/8pm bedtime or you could have a stroppy little kid on your hands, have a lay in one day, nope not happening, feel sick and want to rest, nope he doesn't understand this, holidays also are difficult.
ive been working for home since March and had to go back to work last monday, its now Thursday 10 days later and he's only just started to talk to me again, the first 3/4 days when i came home he just turned his back on me, wouldn't take a treat, he was properly sulking that id left im, no idea what he be like if i went on holiday for a week or two and he's not even truly bonded to me as he's not really handleable.
So all these little life changes, all very minor but as a whole its quite a consideration, now im lucky holiday wise as i haven't been away in 4/5 years.
All these little things are the bits your don't realise or fully understand, now i am a little neurotic about him so this may not be your experience but its a constant thought, if im out im checking my watch to make sure i can be home for his supper or bedtime ( id dont always make it but still think about it)
Certainly not trying to put you off, just a little bit to think about.