“Since when is it that the day a tzaddik dies is a holiday?” “How can there be a holiday for a day when no miracle occurred and isn’t mentioned in the Mishna, Talmud, or any hint at all in the Tanach?”
So…why do we do this all on Lag BaOmer?
If it’s a good excuse for bonfire, who am I to challenge tradition…
Please note: everything I wrote is from the article I linked to in Hebrew. I suggest you read through it yourself if you can – many more interesting historical tidbits.