All I can say to justify my assertion is - how often do the first two games of a playoff series end up split one game apiece? For me, that is the case over half the time. I'd have to research my old playoff teams of course, but I think the numbers would be a 1-1 split 55-60%, home team sweep 35-40%, and a road team sweep 5-10%. Then, the next important point in a playoff series is after game five. How often is the road team ahead 3 games to 2? If it is anywhere near 50%, I believe the visiting team has the upper hand in the next two games, all it needs is one more win. Is it more likely for a home team to sweep those two games, or do odds tend to favor a split between evenly matched teams?
There is anecdotal evidence and stories and than there is real math and data. You are using anecdotal evidence which you admit you are not even sure of. Also like another gentleman pointed out, there are perils in rounding up or down.
So I ask you again, if you are in first place and have already clinched at least a wild card, would you lose on purpose to get that wild card, so you could avoid the dreaded home field disadvantage?
I apologize for poking fun at your theory but it is a little silly with no basis in mathematical fact. I will applaud you for thinking outside the box, but I will also promise you that you are wrong.