use them now. I used to do that, and you will find your tastes change, again and again. I have bags I adored, and now can't stand. You may love them, but later, not as much. So use them now. Along the same line, your tastes change back, so if you have any doubt, keep it.
I relate to this with clothing! I'll buy nice clothes and save them for nice occasions.. well turns out I end up wearing it once before it is out of style or I am on to the next thing!
With bags, I am usually cautious the first 6 months of my bag's life. Then after that I just stop caring as much because I have my eye on another treasure!