I agree with Paul. I would also go further to say that as you grow
as a photographer and if you care about the quality of what you do,
you will become your own worst critic. You will become more
demanding of yourself and your equipment. I really do not think
whether your a pro or not should or will determine for you if you
want L glass or not. Like Paul said you train your eyes and want
higher quality. Its not a necessity to own L glass. Its all
dependant on you and what you want out of your photography.
Jason
Ahh the K1000 days and the 50mm prime. now that will force you to
concentrate on the art of photography

Honestly I find it pretty
funny whe the Catographers harp on the Quality of L glass but the
photos they show off would be just as "good" on a 24-85 or 28-135
and the pictures. Most will never move on from that level so its
pointless to go and blow 1.3k on something that will offer no
function maybe that money can be spent on photography courses at
the local adultschool and they will get much more bang for the buck
in learning some basic photography skills.