I was more concerned about Y2K then the big A! We knew for a fact that the year 2000 was going to happen.
I do remember the family watching TV at midnight, I went down to the basement and threw the breaker on the entire house right a midnight as a joke.
After the breaker went off, I listened..... first child "See I told you something was going to happen". ...... a few minutes later.... "How come the neighbor's lights are still on?"...... then I hear "Where did dad go?" It was a good 5 minutes of fun.
Edit to add: I was most afraid of Armageddon on September 5 1975 then I was during 1999.