DS is 15 months. He's walking well, and has been climbing up and down stairs for ages. We always go with him, but he's really confident and has never stumbled.
My friend's DS is 12 months. He's crawling but not walking, and not so confident going down stairs, but is fine with going up stairs.
On Saturday I was looking after my friend's DS for a couple of hours, and needed to go upstairs. I was carrying friend's DS, and when I opened the stairgate, my DS followed us and started climbing the stairs. Friend's DS then wanted to be put down to climb the stairs too, so I put him down and I walked up the stairs behind them both as they climbed up side by side. I had a folded babygro and a board book in one hand.
We have quite a narrow stairway and I felt confident that if they had stumbled I would have been able to stop them falling. However, DH came to the top of the stairs and was quite shocked - he said what I was doing was really dangerous and I should have taken them up one at a time.
Was I being unreasonable? I thought it was fine, but now I'm really questioning myself.