Gotta get to n-1 or n-2. So hard!
 

OK, here's my stable:

2014 Ciocc San Cristobal w/7700 (downtube shifters)
2006 Bianchi Pinella w/Ultegra 10
2005 Bianchi Luna w/Ultegra 10
2001 Gunnar Rockhound w/LX/XTR
1998 Gunnar Crosshairs with 7700/XTR

Framesets:
2017 Lynskey R265
20xx Ritchey Titanium Breakaway
1996 Bianchi ELOS

I've got too many bikes but I can't decide what to get rid of.
I've thought of keeping one each of carbon, steel and titanium and the MTB.
But I don't really like the carbon bike that much.

Get rid of the carbon.
I dont see why you need that many road bikes either.

Bear pal, are you asking for advice on how to lose weight?

Ditch the Luna

I'd keep the 2 Gunnar bikes and buildup the ti breakaway so you'll be tempted to travel with it! Then decide which roadie you really want. Sounds like no carbon. Pictures would make it a lot easier for some us...;)

I have a friend with like 14 bikes, he is not riding anymore and between his stuff he has a miyata titanium a master and a ti colnago... told him this time ago... start selling your stuff because every month that pass it will worth less and less, keep a couple and put the last stuff in components and good to go (he is running shimano 8 and 9 in several of this bikes)... he havent sell any of the bikes and probably never will at this point, what sucks is that the investment is there depretiating, soon he will have the basement full of 250 bucks bikes.

Advice? start ditching the old stuff you dont ride or like anymore before worth nothing. My other advice, even campagnolo 10 keeps its value better than shimano 10, sell... and modernize what you keep, in that way at least your money works for you that way.

Ditch the luna if you really dont like it.

Sell it all, buy three modern bikes to begin depreciation cycle anew. I'd go custom roadie and cross/gravel and a production full squish MTB. New stuff is largely better than even "nicer" old stuff. Of course, I'm not hugely sentimental about stuff so YMMV.

Topical thread--I end up feeling committed to bikes that aren't even that great a fit for me and have a hard time letting go.

This summer I took a deep breath and sold 3 (and acquired one more). I was thinking this morning that I need to do a 'side by side' with the two steel road frames that 'overlap' and sell one more.

I can see keeping the EL-OS Bianchi for sentimental/project reasons, the Ciocc for rarity, and I would build up the titanium travel as has been suggested. Ditch the Lynskey (easily replaced & getting cheaper), ditch one of the modern Bianchis, and choose one or the other of the Gunnars based on which one is more suitable to the riding you do...

That's n-3--and you would still have a nice collection to cover your options.

simple....sell the bikes you ride the least

if you're worried about depreciation and making a sound investment, well... don't invest in bikes.

I don't know all your bikes well enough to advise which should go. but personally, I have two road bikes (one for summer fast rides, one with fenders for winter/bad weather), a MTB and two cross bikes (if you race cross, you need two bikes). if I didn't race cross, I'd probably just have one gravel bike instead of the two cross ones. I don't intend on collecting bikes just to let them sit, so this stable makes sense to me. everything gets ridden, if only during certain times of the year. if I lived somewhere warmer, I'd likely ditch the winter bike as well.

If the ritchey breakaway is 55ish, sell tat one to me, simple!

Give each one a ride on a nice day and if it makes you think "Meh." - Sell it.

I'll take dibs also on the Breakaway if a 56 or 57.

I would keep the ELOS no matter what. I would also keep the Ciocc, and probably the Ritchey, beyond that they are all on the block in my world.

Bingo. Things are just things. There are more of them. Take pictures..

Just curious - is the Ritchey that much better than the Lynskey or is it just that it comes apart?

I got a great deal on the Lynskey (new) frame - less than half of what I paid for the (used) Ritchey.