Are you proud of what you are doing? Ashamed? Indifferent? How would you feel if your family found out about it? How do you think you will look back on this 10 or 15 years from now? You sound perfectly rational, but it also sounds like you disapprove of what you are doing on some level. What do you think when you look in the mirror? 
I am proud that I found a way to maintain a income to pay full-time college fees and support myself through it, this is just a means of income and I wouldn't be ashamed if friends saw, I am posing in regular poses, I don't do suggestive things such as kissing biceps or cocky acts, nude shit etc. I will be starting a computer science degree in september'15 so in 10-15 years with the way the IT industry is going I should have more 000's than fucks to give over some muscle posing over Skype by then.