What are your thoughts on parentification?

Where the oldest child has to play parent to younger siblings due to necessity such as parents having to work long hours or have to look after a child with a disability?

Part of growing up is accepting more responsibility. If helping with siblings is something that needs to be done, I don't see anything wrong with that at all.

I do think it should never become a full responsibility for the older siblings, especially at the expense of developing their own life outside the home as well. But a helping hand and giving parents a break is great.