At the risk of kicking a dead horse … Here are my thoughts regarding the 'best' camera for learning photography.
Peter and Roger are both correct because they reflect different learning styles. People who like things like f-stops, iso, shutter speeds, etc will gravitate towards SLRs and people who simply want to create pretty pictures will gravitate towards P&S.
Nothing is wrong with either approach and both, if followed diligently, will lead down a path towards meaningful, technically proficient images. The P&S learner will eventually realize that, while their images are nice, they could benefit from greater technical proficiency or control. Conversely, the SLR learner will eventually realize that while their images are technically proficient they could benefit from better content.
So, what camera to start with? That depends on the learner's style. The technically minded should go with the SLR, it will be a more satisfying experience. Abstract thinkers will enjoy freedom from technical constraints by starting with a P&S.
In either case, once proficiency and confidence has been developed in their strong areas the learner will face their weakness and either stop there or, work through them. This is what separates the wheat from the chaff.


