going through the same and have been for the past 5 years or so.. everyones got a stable life apart from me and my brother, all sisters have families and tbh I thought id be settled now with kids, nothing I want more in all honesty but it hasn't happened yet, I got a dog along the way and I never asked for him but id never be without him! in my darkest bouts of depression after I got him I used to sit in the dark crying silently and he'd come and pry my head from my hands and brought a lil smile to my face....
id say having a pet is a great way of DEALING with depression and what comes with it, I was agoraphobic for a period but having a dog I couldn't stay cooped up, not cos I cared what the flat might have smelled like from kai's poop (it im just saying) but because I cared about him having the right exercise and could train him near my flat.
just having something to care for and be proud of makes a difference when you don't care about yourself, for me it does anyway. his my lil guardian angel id definitely be dead if it wasn't for my lil pooch.
anyway were all here for you, all have experience with this kinda thing to an extent ....
hope we can help somehow!