I think ginmummy is right we shouldn't be judging other mums on what they choose to feed their babies.
At the weekend I was talking to a mum who works at a special needs school where a lot of the children come from deprived backgrounds (I appreciate of course that the majority of mums do the best for their children regardless of their income). Some of the kids there came in starving because they hadn't had any breakfast and were in clothes dirty from the week before.
Therefore provided we manage to change, feed and wash our babes on a regular basis then we are doing the right thing by them. Ok it might be marginally "better" to use organic veg and make home cooked food, but then as another mum of older children said once they get to about 18 months all they will eat are chicken nugget shaped items anyway regardless of how many organic parsnips you peel, boil & puree.
At the minute because I am not back at work and I only have one I have the luxury of enough time to prepare the stuff. I am not a natural cook and it is a hassle and time consuming. Once I go back to work I will be looking for the quickest option, luckily financially I am in the position to go down the Plum & Babylicious route, but should that enable me to feel morally superior to people who can't afford it, I don't think so.
Sorry turned into a bit of a diatribe, but I do think we give ourselves a bit of a hard time sometimes for no reason.