Simple Explanation: Online poker is rigged.
Seriously though, online poker IS rigged at Absolute, but if you're playing poker on a different site, then it's just randomness.
Scientists have studied humans and found that humans simply CANNOT understand randomness and that they always look for patterns or create patterns. I.e., there is a famous experiment where humans are asked to pick out what list of "Head-Tails" is the random one from two lists. One a human made up and "randomly" wrote down some long list of "H, H, H, T, T, H, T, H, T, T, T, T, H, H, ..." and the other list is ACTUAL RECORDED DATA of a fair coin being flipped. The people almost always pick the wrong list, because the actual recorded data has a few parts that go something like this: "H, H, H, H, H, H, H, H, H, H, T, T, T, T, T, T, T, T, H, ..." and the people that look at it go "That simply CANNOT be random!"