a Darkroom is an indulgance.
You want it. You deserve it. You should enjoy it. You should do it.
Tomorrow is a whole other world, and right now building a darkroom is the right thing to do - at least I just bought a 5x4 enlarger. I don't NEED one, but it makes me feel better.
Indulge yourself. The financial outlay is minimal in the bigger picture, and you're playing your part by making a commitment to film...