why are boxing fans so negative?

[Taffturner]

Its a sport thing in general,
If a footballer plays well hes the next pele, if he misses a pentally in the next game hes shit,
Same in most sports same in boxing......
People are quick to cruisfy boxers whi have a bad fight,
David haye did wonders as a cruiser, then won 4 or 5 hw bouts in good fashion, he then loses and is deemed a no-hoper?! ok he was dissapionting against wlad and there was no need 4the little toe excuse! but he still went 12 rounds with probley the best in the division and took a solid heavy jab all night without getting ko'd, no shame in that