Why are there so many untrustworthy people over the internet?

on dating apps, people schedule dates but never show up and never cared to cancel. I met someone on craigslist who said he wanted to make friends and we scheduled for a call tonight but he never ended up calling. I just don't get it. Why do people make plans then just not follow through WITHOUT canceling? if I were not to show up, I will always keep the person updated. Its unbelievable how so many people are this way.

Why are there so many untrustworthy people over the internet?
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