How does a mid-life crisis begin..

Spent another hazy weekend in KL, hopefully the last for a long time. Spent most of saturday morning hunched over my PC vainly trying to do some work but was bored out of my mind. Growing up in Nigeria, saturday mornings usually meant doing household chores that I always managed to do extremely slowly (or get up really late) to get time to pass and get to lunch because it was always a scrumptuous meal. Usually very traditional and almost involved some fried fish. Feeling nostalgic, I went down to India town here and chowed into a banana leaf meal. Was invited to a friend's house for dinner on saturday, so got the second great meal of the day consisting of Argentinian steaks and some very fine Malbec. However the best part of the day was not the food, it was getting the grand tour of my friend's house. Very tastefully finished house spruced with the right kind of art and very nicely laid out. He has this huge fish pond that was built on the side of the house designed so that half of the pond was visible when you are sitting in the living room through the glass. The pond itself had lots of very large Koi fish (5-6 Kilos) which seduced us with their graceful swimming and their colorful bodies. One of the fish also a did jumping act, found the whole affair very relaxing. Must have in my house. Visiting his house really set my head ticking, I realised that all my hard work is actually towards building something like that but with no idea where I would build a home like that. Almost felt like a little mid-life crisis creeping up on me. Would say that was the most impressive house I have seen so far (also had a nice pool). Slept in a little on sunday morning, caught up with another friend for lunch and did a repeat performance of the banana lef meal (we did this on sundays also at home :)). Over coffee after we had destroyed lunch our discussion turned to the topic of midlife crisis and the question when it actually starts. I seemed to think it was more professionally driven though my friend seemed to think it was otherwise. His hypothesis was that it kicks in when sex stops in married life. Could explain why people buy yellow corvettes and go to a bar every night when their mid life crisis kicks in. He seemed to think that most men actually don't realize but different phases in their lives are driven by their sex drive (I know a few women who would agree). Food for thought eh?