My poor mother, God bless her soul (she passed away in July at the age of 67 from complications from leukemia), was like this about damn near everything. She had to have at least 20 of everything and often times more than that. She bought everything in bulk. Every time she went to the store she bought more of stuff she already had. Often it was stuff that eventually you will use, but really, who needs 25 things of hand soap at one time? Or 48 boxes of Kleenex? Or 30 huge bottles of Tylenol, Motrin, etc.? I could go on and on. Don't even get me started on the shoes and purses. They number in the hundreds. I used to tell her she would be better off taking the money she spent buying shoes and putting it toward buying stock in a shoe company.
One time when she was gone on a trip I decided to go through her pantry. It was so full of non-perishable food items that you could not fit any more in there and could not see everything that was in there. Anything that was close to the expiration date I donated. This included 10 cans of tuna fish, 6 boxes of gingerbread mix (when the hell was she going to make all this gingerbread?), and 12 jars of turkey gravy. There was stuff that had been sitting in there over 4 years. It did not matter, she just kept buying more. She never seemed aware of what she already had and it never seemed like "enough". Her claim was that she kept finding "great deals" and she "could not pass them up." but really, I think it was a disease. It was pathological. I think she had a compulsive shopping problem. It's like there was something inside her that was empty and she needed to fill in some way and shopping was how she did it. It was like she didn't know what else to do with herself.
So now we are faced with the unenviable task of cleaning everything out. It is overwhelming and it sucks. Every closet, every drawer, every place we turn, there's more, more, more.
No real advice here, just an example of how out of control it can get. My mom's home was always clean, it was always sanitary, and you were not in danger of being crushed by anything - you could sleep on the beds and sit on the couches and eat at the table. And it wasn't junk. But in my mind, it still wasn't healthy. She always talked about doing volunteer work, getting more involved in the church, etc. but never got around to it. Always claimed she didn't seem to have the time - but she always had the time to go to Costco 3 times a week. And now she is gone and all the stuff she accumulated is left behind. As they say, you can't take it with you. Or another saying I am fond of, "You never see a trailer being pulled by a hearse."
No judgement here, just some food for thought...
EDITED TO ADD: My MIL, for whatever reason, feels the need to give us towels as gifts every couple of years. So over time I've ended up with random sets of bath and kitchen towels and the kids will get a beach towel as their birthday or Christmas gift (really? You can't think of something better than the kids might enjoy more?). The ones I like I keep. The ones that I don't like, or start to get too worn, get donated to my work place to be used for pet bedding.