IMHO ... If your bankroll can fund it (see 'Rilla's Bankroll management advice), I see very little difference between $0.02/$0.04 and $0.5/$1.

In fact, you may find that at $0.5/$1, it more LIKE 'real' poker ... at least at this level of micro-limits you can sometimes push people off hands. I personally think that I would suck at $0.02/$0.04 ... I'd probably play too loose and develop bad habits .... always using "it's only 2 or 4 cents" as an excuse for bad play.

Man, at $0.02/$0.04 I wouldn't be surprised if you are getting >=6 or 7 pre-flop limpers EVERY hand.