I’ll admit I’ve done this with guys I met online that were rude, immature, or otherwise intolerable. Decent guys I at least text to say I don’t want a second date. I’ve also been ghosted and usually I’ve been relieved! In general I realize it’s not a nice thing to do and one time I was so hurt it took me months to get over. Bottom line is that person cares so little and has no respect for you so you aren’t missing anything good! You are right. Take care of yourself.