I'd like to get some opinions on adapters for OM and other legacy lenses. I know that you lose the ability to focus to infinity when using an adapter, but I haven't been able to find any other drawbacks associated with them (obviously manual focusing and aperture, but I don't think they're necessarily drawbacks). Sorry if this has been discussed in another thread, but I couldn't find anything; feel free to direct me there.

Is it worth using legacy lenses with adapters? I'm looking particularly at prime, fast lenses with (relatively) short focal lengths - no longer than 50mm and absolutely no slower than 2.8. Thoughts?