I know walkers are frowned upon, and even banned in some countries, so my opinion will go against "the norm", but we LOVED it!!!
Nathan was NEVER happy not being able to move, and this let him move about freely and he was content as can be scooting around the floor! :lol: He would even slide it from one side the other!
It let me get dinner made and eaten, bottles washed, etc.
We simply couldn't have lived without it!!!!
Having said that, of course, we had no stairs to fall down - our stairway has a closed door with baby latch. It never put him up high enough to get into trouble, and as far as delaying his abilities?? I know they say that is a possibility, and I am sure it is for some, but Nathan started walking at 9 months!!! :shock:
He also crawled for the first time the same week. He was a "scooter" - on his butt, wouldn't crawl. But the very same week he crawled and walked.
9 months is pretty early for most, so I don't think it delayed anything!
So, my personal opinion is that if you can live without it, do so. If it would make life easier, and your environment is safe, I don't see a problem with it.