I don't think that is such an unusual thing, trinity .... people seem to do/choose that a lot.
You are right .... sometimes it does feel easier to do just stay where you are, even if being unhappy/sad/angry, etc. isn't so comfortable. Changing, moving out of that place, is hard, it involves effort and emotional energy .... sometimes it's hard to believe you have that energy, sometimes it's hard to even be willing to make the effort to use the energy even if you do have it.
I don't know, but I wonder if at times it's more like just stopping a moment, resting where you are rather than choosing to stay stuck? I know sometimes when I have tried to climb out of my pit, I have just plain run of out of steam ..... so I stop trying so hard for a while ...... and after a while longer, I feel like I can try again.
I think it's normal to have times where you indulge in some self-pity even ... the thing is, whether you decide to live like that over the long term or you move yourself out of it.