There are usability practitioners who completely dismiss the importance
 of aesthetics .
However, aesthetics do have a function. Attractive things work better.
Studies show that emotions play an important role in the users’ experience.
If a product has a pleasant visual design, users are more relaxed,
tend to find the product more credible and easier to use.
 A positive first impression — usually based on looks rather than interaction
 — determines the value of the product on the user’s behalf.
Aesthetics also tell a good many about your brand, product or service.
They show that you care.
However , a good Designer will always balance beauty and functionality .. 
"Form follows Function " is taught .. but do not under any circumstance
 dismiss the importance of aesthetics ...