Because DIY is a poor skill….
I make all my own curtains. The dollar-a-yard stuff at Walmart is often ideal for curtains, and I prefer curtains over clacky miniblinds that are hell to clean, bend and break easily and always get their cords messed up. (If I move into an apartment with blinds, I take them down and put curtains up instead. A little spackle clears us of this deed. ;) I'm currently outfitting my SO's new boat* with curtains, and I was reminded of how very very simple they are. He chose a fabric and a coordinating liner (from Joann's, but we used the 40% off coupons to get it cheap--broadcloth is inexpensive to begin with and comes in an amazing range of colors). For his curtains, I sew the curtain and liner together once, then move out an inch for the rod pocket and sew again. Hem the curtain and liner separately and you're done. Having mastered your basic four-seam curtain, you can customize them as you like--buttons, tiebacks, bobbles, fringe, topstitching... And curtains also simplify cleaning. I mentioned broadcloth above--well, it's very forgiving. Just slide them off the rod and throw them in the laundry with your clothes. *Seizure auctions are also a poor skill. Just sayin'.