The real important things are kindness and a sense of humor. I've been fortunate to have dated and could have easily married women who have those qualities, and time and circumstances didn't work out. Timing plays a big part.

This quote is saying that the most important qualities to look for in a partner are kindness and a sense of humor. The speaker has been lucky to meet women who possess those qualities, but the timing was not right and they did not become a couple. The quote is also emphasizing that timing is a key factor when it comes to finding the right partner.