It will make you a better person. There's nothing easy about it. You'll have less time for selfish things. Your self control will be challenged as you try to maintain composure in many challenging situations. Some that involve diaper blowouts at 3am, the night before a big presentation. You'll be forced to adapt as your lifestyle changes. Old friends without kids will invite you out less. You'll find new friends with…
"make you a better person" how incredibly arrogant,and I would argue having children is incredibly selfish. You are filling a need for yourself no-one else, there is nothing that couldn't be improved by less people on the planet.
Is it the only way to get that experience? In theory no, in practice it's hard to recreate the sheer intensity of the experience of raising children in other parts of life.