No it's the normal reaction, when I was 12 we went on a school trip to london and while on the coach back we got diverted because some looser wanted to jump of a building, being the nice little child that we were when we were close enought to the building to see him everyone was banging on the windows shout "do it" "jump" so I would say your reaction was perfectly normal!
When I was a teenager and lived in Manchester, there was a transvestite on the roof of Kendal's department store threatening to jump. A large crowd gathered and loudly encouraged him to fckng get on with it then.
I don't know what happened as i got bored and went off to the old loke shop in Tibb Street.
"Jump you f**ker jump!
Jump and I will catch you in this ere blanklet wot oi am 'olding
Eee jumped - hit the deck
Broke 'is facking neck
There was no blanket!
Oi aven't laffed so much since my auntie Mabel caught 'er left tit in the mangle"
Having looked after someone who did jump and lived long enough to make it to a&e to give the doctors a puzzle he then died just as they came up with a plan .Shouldn't find this funny but I do bet they would feel sick if the guy actually jumped? Not me though but then I a uncaring barstard.