Like a lot of you, I don't care for kits, because I prefer to select my own fabrics. Most of the time I don't care for the color scheme of kits, or there is one or more fabrics that I don't like and wouldn't even want in my stash if I replaced them in the kit. To me, half the fun of quilting is picking out the fabric once I have decided on the pattern, and spending my day off in the quilt store, just pulling bolt after bolt out and seeing what I like together. (I do try and get the discarded bolts put back, so as not to give the quilt store workers more work than necessary).
Since I started quilting I found that I like to buy extra fabric, for a number of reasons.
1. If I screw up my cutting (which doesn't happen as often now, but did when I first started) I don't have to run out to the store to buy more, because I got "just enough" the first time.
2. Any extra fabric gets added to my collection, so a great way to add to my fabric collection.
3. If I get sidetracked and can't get to making the quilt right away, I know I won't have to go searching for fabric that is discontinued.
4. I will have plenty of scraps to make scrap quilts with, when I don't have a pattern or specific quilt I want to work on.
I never thought about buying a kit when they were on sale, just for the fabric.... may have to start rethinking that one. But I haven't seen that many kits that I just "had to have" since I have so many other quilts I want to make.
I am really into kaleidoscope type quilts, OBWs, 4Patch Posies, that most of my fabric purchases are with large repeats, and even if I got tired of the kaleidoscope type quilts, they would still make great focus fabric for other types of quilts.