Drafting is a hot topic of debate among triathletes.

Those that are against drafting often list the following reasons:

Drafting takes away from the individual competitor nature of the sport.
Drafting is less safe/causes higher insurance rates.

Those that are for drafting often list the following reasons:

Drafting evens out triathlons which often are weighed to longer times in the
  bike leg.
Drafting is more spectator friendly.