Ornery and irritable - not really that technology moved on, but mostly for what could have been but wasn't.

Additionally, bemusement - watching people go crazy over Reddit and Slack, when all I can see is glitzy, more newbie-friendly, centralized incarnations of Usenet and IRC.

Don't even get me started with Facebook (though, I hear FB isn't even popular with today's kids - rather, it's that thing old people use.)