I read somewhere online that teens don't have romances. Not to completely ruin everyone's day. Not to happy about that because now without teen romances and toddlers what is the point of even having children. Those were my favorite parts.
Not true in the slightest.
I've had many sim teens go through a whole romantic relationship as teens, no issue whatsoever. They can go on full dates, "mess around" with each other (a.k.a woohoo), fall in love and go through the stages - reveal crush/confess attraction, ask to be girl/boyfriend, exchange promise rings, have the same relationship indicators as adults (like lovebirds, sweetheart, soulmates), etc. Many people on the forums have been talking about how they've had teens in their game "mess around", yet how would that be true if there were no romance between teens?
Also, there is plenty of reason to have children setting aside the romance options. New aspirations for kids to fulfill, new toys and objects to explore the use of, new interactions with other sims, etc. There's definitely a lot of depth to children in this game.