For people who don't have great offers, they often reapply. For instance, a lot of my pre-law friends often reapply for T14s. I know others who do the same in the engineering industry. In business/finance, many people job hop, which isn't really possible in medicine given that most medical schools don't allow you to transfer, so there's really no upward mobility to go to a better school once you are in. So I don't understand the belief that many med schools ignore reapplicants who've already received a prior acceptance.

I get that it's not worth thinking about if you are just planning on becoming any physician, but for those who want to match into a competitive speciality/residency, school name and the unique opportunities that come along with them play a large part in your success. School prestige is often quantified and scored for residency applications. Furthermore, most lower tier schools are not true P/F, participate in AOA, do internal ranking, receive less NIH funding for research, more likely to have required lectures hence less time for research, and do not provide much leeway for students to match outside of their geographical regions. So it's within your interests to go to a school that provides you with those advantages.

And I don't really get the argument that 'it's lucky that you get to be a doctor in the first place'. In that case ... isn't someone 'lucky to be a lawyer/banker/engineer' as well? And at the end of the day, it's YOU who are paying for medical school, it's not like the school is paying you to become a doctor.