This is one of those "six of one, half-dozen of the other" things. I dropped from 15# to 14# after injuring my hip over a year ago.
On well-delivered shots, you'll strike just as easily as you did with 15#. You'll probably also pick up a couple of extra revs.
On the down side, you might not carry off-shots as well as you do now with 15#.
Try to pick up a used 14# version of a ball you currently use and like. Give it a try, and see for yourself.
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seadrive
Cogito ergo bowl