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Old 06-23-2016, 07:31 PM
Critical1 Critical1 is offline
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Join Date: Nov 2000
Posts: 3,455
The short answer is because evolution never weeded out either small or large (or in between) breast sizes. As to why some women have huge ones is probably the bigger question since our ape ancestors have essentially none. Random mutation that does not increase the likely hood of an early death is a mutation that is likely to spread. If if confers an actually benefit to survival then it is very likely to spread.

or I have no idea either.