Regardless of the morality, weirdness or absurdness, that ship has sailed. Many, many groups only use facebook, and if you want to be a part of them, you have to as well.

I agree it is suboptimal, and whether or not it is worth the tradeoff is an individual decision, but that is the world we live in.

The group level is where most of the rubber meets the road here.

I bet most teens do not use email for anything except work stuff.

I work at a youth centre. The teens I know really have the widest range of options of contacting each other. They use FB mostly for school and family. Email is used mainly for sending documents or attachments.

If they're hard to reach it's because they chose to, not because you're using the wrong comm channel :)

How is your guess about other people useful info?

How is the parent comment's guess about 100% of people having email useful?

That it is true, and a communication system?

But if many don't use email much, how does it help? I barely check my personal email. And no one in my normal life knows my business email. Once in while a family member or friend will send something unimportant via email. Either I never see it. Or I see it a week or month afterward. My career relates strongly to the internet too.

If you don't respond to email and I don't communicate with you in person or on the phone I assume you are uninterested personally or professionally and take my friendship or business elsewhere.

Answering email is really a pretty normal expectation.

So is facebook for friendship lol

If you ask for their email and they offer to friend you, and you decline, should they assume you don't want to be in the loop for things?

Your arguments for email as a platform equally apply to facebook. Yeah email is decentralized and oldsr, but that stuff doesn't matter to regular people who want the easiest tool for the job.

I would estimate at most 10% of my Facebook friends have the same email address today that they had on the day we connected.