Reminds me of the old "I'm not an Officer, I work for a living" comment that I think is on page two of some enlisted handbook.
Just curious, what enlisted people at your school are looking down on the ROTC program?
This back and forth has been around forever just as the post above referenced, it's white noise and you should treat it as such. You need to decide which path you want to take and then do what you need to be the best you can be no matter which you choose. A good officer respects and puts the needs of the men and women under their command ahead of themselves, do that an you'll earn their respect. This is not to say there won't be those that just do not come around and have a giant chip on their shoulder, it's something every officer will deal with from time to time.
As it's been said, both paths are honorable, just don't make a decision one way or the other because you hear someone complain, do what is best for you. I knew a family friend that had graduated college and was accepted to Marine Corps OCS. he completed Marine Corps Boot Camp and came home on leave, he let us know that he had withdrawn his name from OCS because he had been told over and over at boot camp that only enlisted Marines are respected and everyone hates the officers so he stayed enlisted. a couple years later he told me that it was the worst decision he had ever made, even though he loved the Marines he realized he had let others sway him from what was his original goal.