I think it's wonderful. It really does make you live each age to the fullest. But the thing that really hit me was how it adds to each other EP. Going to a Hotspot, and just randomly adding a stink bomb. I like how you have new options to choose from clothing, the hoddies are nice! My favorite year is the Teens. It so fun! Teen Parties, all the awesome pranks around the neiborhood, Prom and then Graduation! The after school activities help your sim improve in a lot of skills; for example if you want yours to be a Rock Star the music club is great, my Sim learned about 5 skills of each instrument. The Boarding Schools, that I did have a little glitch with, one of my Sims came home and never when back.
When your Sim enters young adulthood is nice. I love how they have to ask for their hand in marriage. But watch out, better have a good relationship with his/her parents. (Learned that the hard way.) Ooh! The Barcholette/Barcholet parties are awesome! And then getting married at a wonderful wedding. They added the Wedding Arch and Wedding Cake. How the guest sit and cry and then clap and throw rice at the Sim in front of them (not literally it just looks like it) is funny. Midlife crisis are hilarious! You get some random wishes, but I don't like how my Sim is 24/7 looking at her/him self in the mirrow or pushing the tummies because they thing they are fat or have many wrinkles. But I love it. I honestly didn't think I would like it. I saw it focused in Children Sims and honestly I almost never have children in the games. But it's actually worth it.