It's awesome I wasn't shocked or grossed out. Art should always be challenging to the viewer; not necessarily offensive or controversial, but unique and attention-grabbing.
The guy reminds me of someone here on CF too Is this a concidence? lol
I thought its a great drawing. Honestly, I did not expect this one and really makes my heart hurt.
I have to tell you though, that is what art is suppose to be. You should never apologize or feel bad. Art has a way of capturing emotions and feelings that we usually either try to push away or have never really felt. And if we have felt them, its harder when we see a visual representation of it.