That actually makes sense @JustOneDad. Nobody, not even the admissions officers can figure out chances from a chance thread. (http://talk.collegeconfidential.com/massachusetts-institute-technology/939227-reminder-no-one-not-even-me-can-give-you-an-accurate-chance-at-mit.html).
As a rule, these schools admit nobody who does not apply. The real question that has to be asked at this point, is “If I were accepted, would I want to go there.” Many of these schools are quite different from each other. They have different campus life, and different experiences. They have different admissions policies (for example Harvard and MIT are need blind, and Columbia is need aware). But if you have investigated and found different things at these three schools that attract you, then that is great. Apply. But be aware that the admissions rates at all of these schools are low, and definitely have a plan B should you not be admitted to any of them.