I buy reproduction beads for a few reasons.
It helps me understand the market for repros and allows me to educate myself and sometimes others on how then can tell the difference.
Sometimes they can give clues on how the original beads were made (but sometimes also the opposite.....) and what they would have looked like in a new condition.

Finally, the fact that the whole of the history of beads is filled with copies, repros, fakes, etc, makes me think that these new beads are also part of that history and tradition. So many ancient glass beads are made to look like natural materials, many Venetian beads are inspired by ancient glass beads, etc.
The ones being made now are just another chapter.