Yeah, it's usually a bad idea to allow clients to pick typefaces. Most people have little if any actual creative talent. Fewer have the design sense to choose typefaces effectively. It takes a certain talent to choose typefaces that are appropriate to the specific project and choosing visually compatible typeface combinations.
Some people working in our industry lack that particular talent. It takes know-how and experience to understand what kinds of typefaces work within certain constraints of geometry and legibility needs. Laypersons will just choose a typeface based on if it looks "pretty" or "cool." They don't think about anything else past that.
We'll let customers make certain
big picture decisions about the direction of the project up front. But they're limited on what they can do to nit pick a design. Speaking of nightmares: the big one is to allow a client to sit next to you and "collaborate" on a design. More than a few request doing that and we shoot it down immediately.
Geneva Olson said:
I tend to use IMPACT font because it's easy to see.
I don't love or hate the Impact typeface, but I rarely ever select it. One problem is Impact has been so over-used as
the meme font. And then there is only one weight/width of the typeface. That often pushes me to other alternatives like Haettenschweiler and Helvetica Compressed. These days I'll select a couple type families I purchased that are quite superior to Impact, such as Resolve Sans or Heading Now.