I feel you. I am often in the same boat, trying to balance spending time with my GF, bike riding and wrenching, other hobbies like woodworking, ceramics, gardening, and camping and less-optional hobbies like painting our house and taking care of our three dogs (including one high maintenance puppy). It was hard to balance all these things until I broke a bone in my hand two weeks ago. Now my hobbies are severely limited for at least the next month. Not only is there not time to do everything I want to do, I just can't do them, which is very frustrating.
On the plus side for both of us: no kids! I'm 34, and my friends who have babies just disappear, don't get any sleep, and don't get to do anything. I don't know how they function.
Having to put the brakes on something you love sucks. Best of luck finding balance!