Point 1: Yes, especially if you have alot of great products and don't have alot of "Junk" in your stash. i.e. stuff that you hate, don't work, bad ingredients....etc....just junk.
You can be quite content. And Proud of your Products (even if it is alot and/or overwhelming).
Point 2: Yes, you can eliminate items in search of a few things that work really great for your hair.
At one time, I probably had 15 reconstructors.
So Finding any kind of HG was impossible because I was using (and buying) a different product every week and loved them all. But how could I really tell? All of them gave good results.
Point 3: Excellent Observation. Just like when I ran out of that Serum, I could feel myself wanting to buy like 10 different serums I had read about on a Serum Thread. Instead of just replacing the IC Fantasia One I KNEW I liked and got good results from. I was ready to buy, PM, Redken, this one, that one......
Point 4: Yes, I have room now. I keep my Stash in My Garage. When I first started out it was contained in the Laundry Room (but it grew so fast) and I couldn't stand to go in there (or look at all that stuff) it became Overwhelming, so I moved it to the Garage.
Now when I come home in the evening, I feel "pleasant" and peaceful and not stressed because I am no longer looking at a BSS Warehouse when I Hit the Garage Door Button.