Rejected Candidate and Prominent Family Member at Institution

[Macintosh]

Sorry if this question has been answered multiple (upon multiple) times:
TL;DR:
- Don't smoke
- Don't drink
- Family member is in a prominent position at the institution

Did these make me a weak candidate for getting into the fraternity, or was it not knowing enough brothers? Also should I re-rush and attempt again?

Long story:

I entertained joining this fraternity but they only did spring pledging this year. During the fall I went to their mixers, their community service projects and even some of their luncheons. During the process I didn't smoke or drink during the parties but I still socialized as well as talk to their brothers about the pledging process, getting to know about 50% of the members. After doing that I went to their formal rushes, after doing their formal rushes, I started to ask how the bid process was to one of their brothers. As soon as he was done explaining, he asked where I lived and I said that I lived inside the honors dorm. After that, I did not receive a bid. Now all throughout this time, I kept asking questions about the process, what drew them to the fraternity and what I needed to know in order to pledge (as well ask asking them directly about what happens during pledging). Some people said that becuase of me being nosy as well as not doing the "social" things, I didn't get the bid.

Another person suggested this scenario:

Let's say that I did pledge, and then I did quit because I hated the pledging process. If they did something extremely wrong, I would immediately run to said family member, rat them out, and then have the fraternity dismantled.

So I went to ask why I didn't get a bid:

I was told that there were enough brothers that did not "know" me and that they decided not to give me a bid. He said that if they have a fall class or next spring, I could get a better picture. The kicker: They gave out 19 bids. My question is this: Should I take it as face value that I didn't get to know the brothers in the fraternity and that's why I didn't get the bid OR is it because of my other attachments that the fraternity turned down my bid? Also should I reattempt that fraternity, or is that gut feeling (one way in-out door) the right feeling?

I know this question has probably been asked thousands of time, and I did some searches on the advance search before asking this question.

Thanks.

Also, if you want to know the institution, I'll PM it to you as well as the fraternity I was looking at.
Finally, if you need to move this thread, move it Fraternity Recruitment.