Thanks again for all your thoughtful replies.

A little more background is needed maybe to place some things in perspective.
I am by nature, not a very social person. I like doing things on my own, solo, and not in large groups. My DH is a quiet guy, but is far more social than I am. As with most couples who are together a long time, we have certain understandings. He has a large group of male friends that he gets together with a couple of times a year. They are all involved with sports and they use these weekends to catch up and bond. This involves traveling because they all live in different parts of the state. As we have 2 not yet teenage children, I stay home and tend to them. I do not ever refuse him these weekends as he has a great deal of job stress and it helps him balance everything in his life.
I, on the other hand, am quiet and pretty shy. I go to my work (also a stressful job) and come home. I take the boys to school and pick them up. I do not travel much on my own and dislike driving (the main reason I kept my car for so long-it simply did not matter to me what I drove or how it looked-all it did was get me to work). Most of my friends live nearby. Biking is a major part of my life, I love it and am serious about it. It is my main outdoor activity, besides walking or hiking.
My DH fully supports my cycling as he sees it as a healthy way for me to de-stress, exercise and get out of the house on a regular basis. I am in very good shape and am not overweight. I eat a balanced diet, rarely drink and do not smoke. That is what confuses me about the "not ever getting another bike" thing. He even says that he knows that cycling has been a highly positive force in my life, so I don't understand why wouldn't he want me to be happy doing it with good solid gear that helps me participate in the activity that I love. I understand very well about the whole "upgrading the PC" thing and yes, after a time you reach a point where older equipment doesn't keep pace with the newer software, games, etc. so you do need to improve your hardware. I am not asking him to buy me new bike, just as I did not ask him for money to buy my commuter, just as he used his own money to get the parts for his PC. If a new bike is purchased, it will be done by me with my own funds. I see it as a fairly simple matter of outgrowing my equipment and moving on to something that is more comfortable and efficient. I don't get upset when he travels with his friends, upgrades his pc, or anything like that so I do have a problem with his attitude when I mention getting a new bike.
It is not critical that I get a one immediately, the one I have is functional and I can certainly make do with it and keep saving money on the side. While I can use the one I have, I feel that I should not really have to justify my desire to trade up to a new bike to him in this regard. It is not a case of "status" or simply wanting something new for the sake of spending money. That is what is bugging me the most. He simpy cuts me off in the discussion when I bring it up. It is specifically a bike related thing because he doesn't have the same attitude when I mention anything else (yarn, art supplies, home items, clothing, etc).
Sorry for running so long.