I don't have very much fabric but what I do have I sometimes find very hard to cut into. Reading this thread has made me think that I really should not worry about using up my fabric as I buy it and then buying more when I need it, rather than trying to "collect" it.
One thing I find really hard is that fabric collections come out for such a short period of time I feel the pressure to buy it while I can before it sells out, even if I don't need it.