Baby on a bike is easy (well, once they're big enough to hold their heads up). Ours (one and five) pretty much want me to take them on the bike everywhere, unless the weather is brutally wet or cold (< 25˚F for me, though a friend here takes his kid on the bike down to about 15˚).
When the weather's sufficiently bad, we take the BMW with heated seats instead =)
When the weather's sufficiently bad, we take the BMW with heated seats instead =)