i am not my brother's/sister's keeper

(I admit, a semi-rant is coming up - just an off-shoot from recent conversations I've had with people.)

The problem is two-fold:

1) When things are going well, complacency exists.

I don't know what the percentage of introverts in the world is versus that of extroverts, but I know a lot of people who are introverts for some reason. Perhaps it's because I'm an introverted extrovert, and I can reach out to other introverts (not possible if you're a straight-up introvert because there's no "reaching out" involved.) And honestly, one's not any better than the other, because both have inherent problems. However, there seems to be this general trend of complacency.
If they get along fine when they're put in the same room, if they have the ability to chill and have fun, they don't dig deeper and seek out more.
And that's an issue I have particularly in a Christian community. There are so many times when we try to get together big events for times of "fellowship" - but honestly, how deep can you get within 2 hours of playing charades and Cranium? These times are very necessary, of course, because it breaks the ice and it's casual and fun. But when it's time to get real with each other, time to get intense with each other, the whole iron-sharpening-iron ordeal, why do so many people fall away?
I acknowledge that sometimes, there are just too many people. And of course, not everybody is at the same level of commitment to the community or even to Christianity, but for those that are pretty committed and supposedly "on fire" for God, why do we get so wrapped up in our busy schedules and other mental commitments that not only do we not push forward, but we don't even recognize the efforts of those that are trying for a deeper community? (And no, I'm not talking about myself. Really.)
Is it because we are not our brothers'/sisters' keepers? We don't feel the need to dig deeper, to know more and be known more, to love more, to pray more. And that is one side of the issue.

2) When things are going poorly, apathy exists.

You know how your mom always said, It's easy to be friends with someone when everything's fine and dandy, but when hardship hits, it's even easier to leave? Or was that Proverbs?
I think even within this one, there's another fork that divides into a) when things are going poorly between friends and b) when things are going poorly individually.
As for part A, I think sometimes it's really easy to give up on some people because 1) they're apathetic, 2) they don't listen to you, 3) they've become different from who you are/who they used to be, or 4) all of the above. And there are definitely times to let go and just let God take care of them, or let someone else (with God's help) take care of them. But sometimes, the responsibility to keep up with them nonetheless falls on you. And it's difficult, no doubt, but reconciliation is all that's needed in these situations for things to get better.
For part B, the biggest issues are 1) busy-ness and 2) (particularly in the Christian community) sin. For number 1, it says in Hebrews 10:25, "Let us not give up meeting together, as some are in the habit of doing," so that's that. For number 2, when did it become okay for us to not confront each other about our sins? For us to clearly see and/or know things, but just let things lie because of fear of "ruining" a friendship? Or for us to judge and not correct/advise because they're "hopeless"? And secondly, when did it become okay for us to make someone feel like they couldn't approach anyone about a struggle for fear of being judged? Particularly between (ex-)close friends?

Consider carefully whether or not you fall into either category, or both. I'll be the first to admit that I am guilty of things in both, so please don't think that this is some huge rebuke in which I'm not a part of. We all need to push forward, because we are our brothers'/sisters' keepers - we keep them accountable, keep them strong, keep them loved.