You can't miss what you have never experienced.
There are some negative experiences you never want to experience again. That one time is enough for your lifetime. You definitely don't miss those. Like a bad breakup or when you were robbed or an embarrassing moment in your life.
But there are positive experiences you want to re-live. Like being at the beach at sunset with your friends, telling stories. Or that time you went on a food trip with your buddies or your first kiss.
I think some experiences are better not to be had in the first place so that you don't even have the memory of them. Like, I've never been pregnant so I don't know what that's like. No matter how you explain the experience, I will never understand it.
Having lived experiences helps us have empathy for those going through the same things we have gone through. It also brings us together. You have someone who understands you because they have also lived through the same or similar experience. You have something in common with them, and it unites you.
When you are young, they tell you to live you life to the fullest, experience as much of what life has to offer. Many people take that advice literally and go all the way to 11, throwing caution to the wind. This is a recipe for multiple regrets later in life. How many dreams have been dashed because of one negative experience?
By all means live you life, experience all the things but remember that all actions have consequences. Weigh the consequences before you take the action. Don't let the moment rule your entire life. Don't let friends influence you to make a seriously bad choice in life. Have guardrails while you explore the world.
Hopefully when you're 40, you won't have many regrets.