[The Squatter of Amon Rûdh]

but he spent most of his lif at Oxford, an all male university at the time

Lady Margaret Hall, Oxford's first women's college, opened in 1878; fourteen years before Tolkien was born.

he never spent any time with women

He was married, although I'm willing to concede that he may not have spent much time around more than one woman.

Women were only just begining to me emanciopated

Women over 30 were given the vote in Britain in 1918. In 1928 the minimum age was reduced to 21, in line with that for men. The first woman MP was elected in 1919. By the time Tolkien started writing LoTR emancipation was well underway. Also during the first war many women took over the jobs of men who had joined the army, a fact of which Tolkien would have been well aware. By the time RoTK was published women's rights had been on the political agenda for upwards of seventy years and service as nurses, military auxiliaries, munitions workers and so forth in the Second War had certainly got people used to the idea of women at work. I'd hardly call this the beginning of emancipation. More like a mid-way point.

Women were misterious to Tolkien, thus he made most of them elves

That may be true, but I'm not so sure that society was to blame. Perhaps lack of interest in the subject played a part as well.