You're right, I did miss your point. If I see it now, you're saying invest in any sector at any time because it doesn't matter as long as you're in all sectors.That's certainly one way to look at it. But not one I would espouse.
First, individuals most likely do not have sufficient funds to invest in all sectors - period. (It's possible to come up with hundreds of "sectors".) And if you aren't in all sectors, which do you select and why? And if you are selective, don't you still have a "when to buy" decision? Second, what percentage allocation in each of these "sectors"? Third, buying anything after it's had a multi-year run up might not be prudent. Fourth, not all sectors snap back after a long bear market. So buying into (or holding on to) such a sector could be detrimental to your financial health - autos, airlines, and some geographical areas come to mind.
Therefore, buying into any sector just because you aren't covered there isn't a good plan to my mind.
The original poster was obviously a person who moves into/out of sectors - at least this sector. Therefore, was looking for advice on when - not if. Your comments, then, must have been an attempt to persuade the poster to change investment approaches?
Don