If you indeed have a lack of volunteering, that will be a death sentence for your app.
What are you going to say when asked how you know you are suited for a life of caring for the sick and suffering? “That you just know”? Imagine how that will go over!
Here's the deal: You need to show AdComs that you know what you're getting into, and show off your altruistic, humanism side. We need to know that you're going to like being around sick or injured people for the next 40 years.
Here's another way of looking at it: would you buy a new car without test driving it? Buy a new suit or dress without trying it on??
We're also not looking for merely for good medical students, we're looking for people who will make good doctors, and 4.0 GPA robots are a dime-a-dozen.
I've seen plenty of posts here from high GPA/high MCAT candidates who were rejected because they had little patient contact experience.
Not all volunteering needs to be in a hospital. Think hospice, Planned Parenthood, Ronald McDonald House, nursing homes, rehab facilities, crisis hotlines, camps for sick children, or clinics.
Service need not be "unique". If you can alleviate suffering in your community through service to the poor, homeless, illiterate, fatherless, etc, you are meeting an otherwise unmet need and learning more about the lives of the people (or types of people) who will someday be your patients. Check out your local houses of worship for volunteer opportunities.
And work on the self-esteem. Your stats are NOT "low". The median GPA for MD matriculants is 3.7 and MCAT is 31. While I'd rule out Harvard, U Penn, Wash U and their ilk, Pitt, Northwestern, Case, Baylor, JHC, Keck etc are in striking distance.
Examples include: Habitat for Humanity, Humane Society, crisis hotlines, soup kitchen, food pantry, homeless or women’s shelter, after-school tutoring for students or coaching a sport in a poor school district, teaching ESL to adults at a community center, Big Brothers/Big Sisters, or Meals on Wheels.
I'm an Asian Cali applicant who applied to a majority of top/mid-level schools, and UCs. I have a 3.90/34 (10 in verbal) but lack volunteering experience. Everything else about my app should be decent.
I understand my stats are little on the low side, and that lack of volunteering hurts me. When should I start worrying about no IIs? I submitted everything pretty early (within 2-3 weeks of first possible submission date).