Giving people things they don't want.

[Oracle_Hunter]

To be somewhat serious:

The reason you get alternate suggestions is that the respondant believes he has found what you want via a different route.

For example, when you ask for an "archery focused ranger using blah-blah-blaah" people are going to look at that and see "I want a character that does this." Often (in 3.5) instead of making a convoluted Feat Chain work it is far easier to make some flavor of CoDzilla or Wizard which does what the quoted build seems to want.

The best solution to this is to explain why you want a certain build. If you say "I'd like a character that does X, but he can't be a Caster because it doesn't fit the backstory" then only idiots will suggest a Caster.

People aren't always being jerks - sometimes they're trying to answer what they think is your question because the question wasn't asked with specific clarity.