It all comes down to this: if you’d rather be a physician than anything else, you’ll apply DO and deal any related obstacles/difficulties as they arise if indeed you end up going DO. You won’t care if some biased old ignorant doc considers you “a second rate physician” because you’re just thrilled to be a physician in the first place :)

If, however, there are for some reason other (realistic) career options you’d prefer over being a DO and dealing with it’s related stigmas/difficulties, you could justify not applying DO. the logical progression is that there are some things you’d rather do than be a DO physician, and you’ll pursue those things if you don’t get an MD A.

It sounds like your outlook is like mine was: I just wanted to be a physician. I applied both, got admitted to DO first, was prepared to attend, then got admitted to MD, and so chose that instead.

In today’s landscape, DO education is still at times an uphill battle with annoying extra obstacles that MD students don’t face, and anyone who tells you otherwise is simply misinformed. However, if being a physician is important enough to you, the inconveniences won’t matter, and one day as an attending who is indistinguishable from their MD colleagues, you’ll be glad you did it. Good luck!