Does a girl deep throat because she likes it or because she feels compelled too. Also, do girls like swallowing a mans cum or would they like it to be squirted on to their faces as is shown in most porn flicks. Porn flicks have got it wrong.

If you read the answers and comments on AB you will find accounts by women who like all those things.
But in my experience it was just another technique that women learned to get along. I have been with women who did those things but never saw that they ever enjoyed them. Deep throating apparently started because women found it unpleasant when men ejaculated into their mouths and they didn't have to taste it as much when it just went down their throats as long as they swallowed regularly and breathed through their nose. And then it developed from there. Before the widespread availablility of contraceptives many women used oral sex with deep throating as a man-pleasing alternative to intercourse from which they might get preganant. As an older woman once told me, "it got me through Europe".