Dealing with people who do not like those that do something else than (what the listener expects) the "default" thing happens in so many contexts. Not going to college is just one of many. Some simply have a difficult time with those who "live intentionally" - they seem dangerous, subversive, maybe even untrustworthy to said listener. Try explaining to certain people that you're over 30 and not married (and never will be), don't have children (and don't want them), live alone, don't own a house or a car (and take public transport) and watch as their faces change to shock, confusion, or abject terror. It's a particularly odd reaction as these things (like not getting married, living alone, etc.) become more common in places, but some groups/cultures/subcultures simply have not caught up with that reality.

It's perhaps a ubiquitous reaction to those perceived as "purposeful" outsiders.