Nope, its not. England already has one of the highest rates of divorce and single parents due to failed relationships in the Europe, maybe in the world.
Early to mid 20's is a ridiculous age to get married or have kids. You can get married at any age, kids, yeah not so much so. Alx is right, too many people rush in marriage etc, without having the life experience first, growing up, focusing on getting a good career together. Instead they fall into the "Disney Princess, happy ever after lie." When in reality, it doesn't always work out like that.
Look at how many people are in their 40s and maybe on their 2nd or 3rd marriage. Its crazy, as if they are trying to live upto what the British society expects them to do.
And for the people in this thread who still are friends with their ex's with kids even though they are no longer together, all you deserve a massive high five

Not many can do that, I know NONE of my friends have.