The Inca Trail is a hard hike with nasty bathrooms, but that wouldn't bother me if it weren't for the fact that it is so insanely crowded. You're constantly being jostled by other trekkers and porters. There's so many people that they scare all the wildlife away.
On top of that not being able to control the pace of the hike makes it far less fun to do.
The Incan trail was quite beautiful at times. Still, if you're into treks than do Salktanay or Ausungate. There are just better, cheaper hikes out there.
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