That's fine if that works for you.
The OP's situation may be different. He has siblings - why aren't they doing their share of the work? I guess I don't see this as "doing it for the parents" - they are gone. OP is doing it for the living siblings.
It would help us to get some more info about the family dynamics. Why aren't the others stepping up? Distance? Are they incompetent?
If you look at the list of things that were done in the OP, that's a lot of work, and none of it is fun. Why should OP get 'stuck' with all this, why aren't others helping?
As I said, situations can be different. I did lots of things for my Mom when she went into Skilled Nursing and Assisted Living. One sibling is a mess, and just got in the way and complicated my life, another sibling is out of state (but he is retired, traveling world-wide, he could have been involved, he just didn't - other than to criticize some of my decisions, w/o even seeing what was going on), and the other sibling is much younger and dealing with his business and some family/personal issues. So I did that "for my Mom". Although I did somewhat resent that the others didn't or couldn't help, asking for compensation would have been more trouble than it was worth. Though I did keep good records of any expenses that I had that my Mom reimbursed me for. And I sent out records of that as they occurred - I wanted everything to be transparent on that, didn't want questions later.
DW and her sister do a lot for their Mom (other sibling is out of state). They also "do it for Mom", but yes, there is some tension that their out-of-state sibling (also retired and traveling) isn't around to help, ends up doing some things which just make work for them (sends gifts to the Mom that require effort to get set-up, or on-going attention). They don't want compensation, but I know it grates on them that the will is split evenly, and they are the ones doing all the work for many years now. Shopping, doctor's appointments, dealing with insurance, etc, etc, it all adds up to a LOT.
-ERD50