I see that the Panasonic 25mm F/1.4 lens is now available through B&H. This looks like a fabulous lens to use as your number 1 prime. I recently bought the Zuiko 50mm F/2.0 Macro ED for my E-510. Wow! What a big difference from the kit lenses. It really makes the camera seem like more of a tool than a toy, not that I didn't think the E-510 wasn't a serious camera.
However, I have noticed that it isn't as versatile as I had hoped. 50mm is just too close when you're shooting certain subjects if you don't have enough room to move back. A 25mm would certainly be nice to have in certain situations. On top of that, if a $400 lens is this much fun to use, then an $800 lens must be twice as satisfying!
Besides the fact that the money could probably be used for more practical things, such as going towards my mortgage principal or my kids college fund, why shouldn't I get this lens? (BTW, nobody is starving at my house and the bills are paid.) I've only had the camera a few weeks and as much as I lust after this lens I'm not sure how practical it is. Considering I've barely learned how to use the E-510, is it ridiculous to spend almost twice as much on lenses in the first month of owning the camera than I paid for the original package? (Twice as much includes the 50mm and the 25mm.)