What is your speaker ownership history since 1995?

I am just Wondering how anyone has the time to enjoy the music, when one is changing the most important component of a Hi-Fi that often? In my experience, it take at least for me a long time to get to know my speakers, with the different styles of music I listen too, after years I still hear new things from my setup that makes me smile and enjoy the music.

Agreed it takes time as you say.  Just not years:)

I enjoy the music and the hobby of trying different speaker and electronic presentations like prof. describes. He says it better than I can. I love different presentations and that is by different speakers. I have 13 pairs in different rooms and set ups.  When I listen to vocal , acoustic music, chamber classical  and smaller ensemble- The Quads , Spendors and Harbeths are the best for ME. Others have other preferences. I am lucky I have many rooms all set up to give me what I believe the specific speaker or speakers will present the music I want to hear. I have different electronics- tubes VTL and Jadis and Conrad Johnson  and Vac amps and preamps in different combination of all tubes or tube and ss combination or all solid state combination. 
I have 3 great turntable setups and have both moving coli and moving magnet mono and stereo cartridges , have built in phono preamp or line stage hooked to tube EAR phone preamp and Cotter head amp. 5 different subs at different locations and used if needed. Have SACD audio aero prestige, AMR 77 CD , . I am lucky to be able to have all  these  and  enjoy the different music I get from them. 
I love slam bang rock and jazz and rap and electronic music and I use my Klipsch  and  Paradigm signature towers and double Magnepan  3 A and double JL 113 subs. 
This weekend I am going to enjoy real music at Minnesota Sommerfest to see Andre Watts at Piano and  with the Orchestra  Friday and Saturday is Vienese waltzes  and  is chamber music afternoon. I have been going to Minnesota Orchestra subscription concerts  with center seats at row  12   for 30 years. Have tickets for Coldplay at Target Center this Aug 11 and U2 this Septmeber at Excel in ST Paul. I love both classical, rock and Jazz and just saw Celtic Thunder at Rochester Civic Center 1 months ago. I love  this hobby. I was in Axpona in Chicago this Spring and fell in love with Vivid Giya speakers run by Jadis electronics and vinyl front end  You should go to the audio expos if you can.   one is coming up in Denver and you can listen to all types of presentation like the " prof " described.
Am glad you are enjoying the speakers and system you have. That is what this is all about. Sorry everyone for my yapping. I will be quiet now but am looking forward to  my concerts coming up. 

I'd rather have one near perfect system than thirteen but that's me. Ideally, I think I would have two or maybe three very different systems. 
When you buy used or even new unheard you might have to try many different speakers until you find the right ones. Still, changing speakers every year would be too much work for me, you also often have to change electronics and cables when you change speakers or at least make upgrades. So no, not every year, but every five years - yeah, why not? Especially if each time you actually move forward not sideways.

I have a lot of speakers on my list that were never in my main system.  I've always had a few extra little systems that I kept around for fun and comparison.  I tend to buy stuff when it's deeply discounted so the list price of what I've bought is frequently a multiple of what I actually spent.  I bought the VA speakers when BB dropped them 5 years ago or so and paid <25% of retail.  Almost everything I have was bought used or on sale.  I had the B&W N802s in my main system for 6 years and then traded them in for 2,000 less than I paid for them.  Not a lot of money at all when you look at it that way.  They were replaced by the Thiels which I paid $3,500 for on top of the $3,500 trade credit.  I don't think they've depreciated all that much since I bought them five years ago.  I doubt they've lost more than 2k in value.  

I went through a period where I bought the behringer measurement mic and real-time analyzer, made lots of bass traps and got everything equalized really flat.  It was an interesting experience and I'm glad I did it.  It gave me a good sense of proportion about how much difference the room makes compared to other things.  I do like tinkering with stereo stuff and I have no problem admitting it.  It's just a hobby.