Heated debate as there hasn't been in a long time...
Yes, most likely we would talk quite differently if it ended tragically.
My thinking would go more in the direction indicated by Geolog79 and Viharnik.
In mountains, especially snowy ones, certain rules apply. One of them is that in shady sides of high mountains you normally don't go during hard winter. Snow is usually less settled and more unstable than on sunny sides. Just the opposite in spring, when snow on sunny sides is usually more unstable, things usually worsen during the day. Along with this I don't mean that these rules are 100% and always hold true. There are exceptions, which you learn from experience, own or others', but that requires quite some mountain kilometers. But I won't bore - better read something on the topic, follow besides weather also avalanche forecast (ours, Italian, Austrian) or even better go to appropriate training (alpine school, snow avalanche safety days, etc.).
So: Equipped I believe, experienced - I wouldn't say, rather naive. Thank God it turned out as it did. I hope someone learned something from this.
I dare say yes, everyone who seriously goes to mountains and/or climbs, ski tours, boards has at some point done some prime stupidity. I have too, probably will some more, but hope as few fateful as possible.

We must realize that there would be few of us if every mistake was punished. Sometimes you need some luck. Say whatever you want.