I understand many parents' fears about letting their children date, however if it is a non-debatable issue in the household, then chances are your teen will do it anyway--behind your back. My mother told me that I wasn't allowed to date until I was 16, but I managed to do it anyways. I (purposefully, I admit) got together with an older guy and I started sneaking out at night, and I would sneak him into my house at night occasionally. I ended up "falling in love" with him, and unfortunately got pregnant (had a miscarriage cuz he hit me so hard, but that's another topic). I latched onto him like a puppy because I was intentionally rebelling against my mother. If my mother had allowed some negotiating, then I never would have gotten into that situation. I wish she had allowed group dating, because I would have been socializing with people my own age. 
 
Teenagers do need to learn important social skills which will help them in the dating field later. Whether you like it or not, your teenager will have that huge crush, and if you do nothing to help him or her learn how to deal with those emotions, then you may be dealing with bigger problems later on. Dating in a group takes a lot of the pressure off, and allows teens to learn to relate in terms of like/love/lust in a much less intense atmosphere. In a group setting, there is less chance of kids having sex, and will feel much less pressure to do more than they are ready for than in a one-on-one date. When you're with one person on a date, that person may have a very strong influence and put your child in a position to have sex because that person wants to. 
 
Also, if you don't allow some exposure to dating, then you may be setting your child up for a promiscuous future. It is analagous to being in a cage for a long time, then being set free. You feel you've missed out on so much, so you get into everything you can in order to "catch up" to your peer group. A dear friend of mine was not allowed to date until age 18, and as soon as she got her freedom in college, she went buckwild. She began having sex with lots of people because she thought she was missing out. Now she is 24 years old, and is still having trouble forming healthy relationships with men. She tells me that if she'd been allowed to date at an earlier age (maybe 14 or 15) she would know better how to deal with the emotional turmoil that can come with relationships. 
 
I'm in no way saying that you should force your child to be in a relationship, but at least allowing the option to hang out/date in a group setting will foster healthy attitudes and behaviors later on.