Back Order!!!

Why is it everything we want for our bathroom is on back order? I can't even get the mirror that I want until the end of March! It seems a little retarded to me. One friend wrote me today and said "It's a dirty move, but some companies reduce inventory levels to up sell on-hand stock. Hopefully you two didn't get put in that position".
It seems like back ordering is everywhere I look now though, we went to inquire about a bedroom set and we are looking into the middle of April before they will have any in. So what's the deal? Why offer products if it takes so long to get them to the customer. I can understand that some things take a week or two but I've been waiting 6 weeks for my bathroom sink and I still don't have it. I have looked other places to see if I can find something else that I like but no luck. We also don't have many stores up here to choose from and we don't exactly feel like finding a way to get something else from a further location all the way up here. Oh the joys!!!
I just hope the kitchen goes much smoother for the ordering process... but we won't be doing that for a while. Next on the list is the flooring in the master bedroom, hallway and living room... Still have yet to pick something out but I do know there is a big sale coming up for flooring at home depot 15% off... maybe I'll find my bathroom floor as well?