This is a sensitive question, but do you think that it is necessary to be good looking in order to succeed in the marketing field?

Your personality is the major factor in marketing but it is only beneficial if know how to talk.

Marketing is combination on personality and communication.

I would say most of the time especially in this generation good looking play a big part in an organization customer retention.

To be successfull in any domain, looking good is not a must, but for sure it helps a lot. So yes, it's better to look good, but you should not count on it. It's an advantage you should simply use if you have it.

Yes, it is necessary to look good. Your personality is the first thing that people observe...

It's not about looks so much as it is about personal hygiene.  You can be dressed to kill and even good looking, but if you are not well kempt and don't have appropriate level of personal hygiene, you can kiss any negotiations goodbye!

Actually, it does in more ways than one.  However, it does not stop there, you need to look and appear nice and confident.  You may be good looking but if the customer or your proposed client got a whip that you are not that confident in yourself, you might as well assess you standing.  Actually, it is not only to succeed, but rather in order to survive, excel, and succeed in the marketing field, you need to be smart, confident, strong-willed, with in depth knowledge of your product, good looking. And last but not the least is that you are happy with what you are doing.

Your looks dont matter, your work does. Be good in your work.

Unlike in the Disney stories, if a marketer were to look terrible then chances of her/him getting closer to the client or consumer and having a meaningful conversation would be rather short lived! We humans, do use our basic instincts in the first instance - usually.

However, there are plenty of marketers who have the acumen, experience and will to push great marketing strategies without necessarily looking like they just walked off the fashion runway. In the end, it will always be the results that matter. Being a normal looking person would suffice in this case.

Having said that, should the marketer also have the looks along with the brains, then it would give that little bit extra in appealing to the audience quicker. 

Also, we do need to differentiate between a sales person and a marketer here. The former will need to interact quite closely and quite often with other human beings, whereas a marketer does not have to necessarily. 

So in conclusion, good looks may appeal but without the actual delivery, no person would ever be termed successful in the marketing field.