Why limit yourself?
I have spydercos. I have a military that is an amazing slicer and super light. It goes with me as a back up on hikes. I have a lava that I use when I travel to chicago or other non-knife-friendly city. I have an endura that gets the tar beat out of it. I have an early 90's delica that (other than a sak) was my first good, modern knife. I wouldn't get rid of it.
I have a couple of benchmades. A mini-stryker I've had for over 12 yrs. We have a lot of history and it's pretty worn out but is still solid. I have a 5000 that I carry once in a while because I like it. I have been thinking about possibly getting rid of it.
I have a HEST/f limited run on order as I'm intrigued by it and it will kind of be a special knife as I'll get it right about the time I have my first child and the serial number corresponds to that occasion. We'll see how I like it. If I don't I may sell it and get something else as a memorial type knife. It will be a user though regardless of what I get.
I have a ZT 0300 that I'm still not sure about. It's an awesome knife but I'm not sure if it fills a niche for me that isn't already covered.
I also have various fixed blades. Mainly Swamp Rats with an ESEE Izula and Fallkniven F1 thrown in for good measure. There are certain tasks in the woods even a CRK folding knife isn't up to and honestly I like other fixed blade designs better than the one piece knives.
While I could certainly get by with less pretty much every knife I own has a particular purpose and is appreciated for it's design, function and place. There's nothing wrong with that.