Is this why there are few men as missionaries?

Hudson Taylor, the founder of Overseas Mission Fellowship (formerly of China Inland Mission) once described missionary work as follows:

The work of a true missionary is work indeed, often very monotonous, apparently not very successful, and carried on through great and varied but unceasing difficulties

Is this why there are very few men as missionaries? The 2 mission agencies (British) that I am familiar with have a ratio of about 3 women for each man. I am sure there are many other reasons for that but I wonder if one of the major ones is the male aversion to hard work? Speaking as a man (and from my experience as a pastor) I can say that men sadly are often more willing to let someone else fulfil their spiritual responsibilities, whether it be their wives, their mothers, their children (!) or their government. How very different to the Real and True Man who never shirked back from hard work