i was asked about why i don't use cast dropouts:

in no particular order, all imo:
1) for the service life that a dropout is asked to provide,
a forging is more rational than a casting.
2) there is no reason to produce a casting, especially
one with limitations in size-range availability as long as
there are resources for forged types.
3) there is no reason to incur the costs or pay the per-piece
fee for castings... (see #2).
4) for someone with a "framebulder's" sensibility, a cast
dropout limit the amount of his/her imprint that
can be left on the finished piece.
5) because i never had to.
6) all of the above (and more) wouldn't matter if i also
didn't care about the "looks" of the finished piece.