Khloe picked a partner that helps reel her in and in some sense parent her. Lamar is a very mature patient man. Kris is a pompous testosterone driven child. Combine that with Kim who is a narcissistic overblown windbag and of course it is going to fail. Plus as stated above Kris Jenner is more interested in Kim so Khloe gets to have a life of her own.
I disagree with above though that say their family dynamic is great. I see too much fighting, noses in business, and just annoying each other period. I do not fight with my siblings because we do not hang around daily with each other so we value the time we spend together. We all have are own lives and get together with our families and spend quality time, but not over the top time like this family.
As far as the wedding gifts go, that bothers me less than the fact that E paid for this wedding and sponsors or whomever, and it could have impacted people way more. So much could have been done with that money in this economy.