I think it makes as much sense to have a style of bike you are comfortable with, both as a rider and as a mechanic/builder/enthusiast, and then build within that style, as it does to try to fill your life with a specific bike for every possible trail variation or purpose.
All my retro bikes are full rigid and date from the late 80's-early 90's...the era when I spent the most time working in shops and day dreaming. They all follow a theme and many would say they fill the same role. I'm OK with that though, because in the heyday of the mountain bike,
they ALL filled the same role. Once upon a time there was only 'the mountain bike'. This task specific stuff is a market driven industry profit generator, and you don't necessarily need to buy one of each. Conveniently for me, new fangled Free-Ride All Mountain stuff is from a generation later than my favorite so I don't feel the desire to own a bunch of that stuff, and while my 2008 EWR can serve that task (with a little rider restraint!), it's by no means an AM/FR dedicated machine, and can also serve general marathon cross country duty. Truly a decendent of the original mountain Bike ethos
I'm not saying that a 5 inch travel bike is a waste, I'm just saying that as a rider, accepting a bit of compromise in favor of your favorite trails is just fine. Riding my blue EWR, I followed a bunch of guys on AM bikes, around lava rock strewn trails in central Oregon last summer. Sure they were faster than me, but that had more to do with my gut and less to do with their bike's prowess. The EWR was perfectly serviceable in Oregon, if not optimum. I wouldn't run out and dump 5 grand on an Elsworth or whatever to gain that little bit more of potential, if that 5 grand could be instead spent acquiring a few more of my favorite bikes from back in the day.
I don't race, so I don't care about that either.
I don't see a problem with having a slew of bikes that handle the same general purpose. You are not the first person to realize that your quiver is filled with all similar arrows. Surfers have done it for 50 years...
