My 17 month old ds has just learnt how to climb the stairs. We live in a 3 bedroomed terrace, fully carpeted so the stairs are not extremely high or windy etc. So far we have no stair gates. Ds climbs to the top when he likes really, although we are aware of him doing this and usually watch him, or follow him, but not every time iyswim. So far he hasn't attempted the downward journey. What I want to know is, are we being very irresponsible if occasionally he makes his way up when we're no watchig him, do we have to have stair gates, my aprents never had them and we all survived.... What do people think about this? Or do you all have horror stories of broken limbs, cracked open heads from litle ones falling down stairs?