If you have solid game, and very high value, then don't be surprised she sleeps with you quick. Someone of high value doesn't judge based on that, because he knows that most women have a similar attitude when it comes to sleeping with HIM.
You can have zero to no game, and she'll drag it as long as possible, even if she is the biggest hoe. If you find yourself constantly using that standard, you are most likely not high value yourself. Think about it, if you think she shouldn't sleep with you, you're right, she shouldn't sleep with you. She doesn't deem you worth it. If you judge a woman just based on when she sleeps with you, you might be thinking a woman is "high quality" because she's holding out, but she's most likely already banging a higher value guy, and you don't even know it.
Pretty much, almost every woman, wether she's a hoe or not, has had a one night stand, or slept with someone they were really into, quickly, and you wouldn't even know it because she is not putting out for you.
Sure, it is a minor flag for me, but I look at many other factors when judging a woman's fitness for a LTR with me. One who is delaying or putting off sex also should raise a minor flag, because you just don't know what kind of issues she might be hidding. So it is better to really get to know enough about a person before you start judging. Works for me.
If you find yourself judging a woman who's slept with you after 1 or 2 dates, you subconciously are saying to yourself "I don't deem myself worthy, why would she sleep with ME this fast." If you are high value, you don't question it because, #1, you get that type of action, from any type of girls, not just sluts, and #2, you don't know her if she's a slut or not, it is barely the 2nd date, you have yet to find out what is under the surface. She is still putting a front (which most of the time they might be holding back, even though they are really stluts) and you can't really tell if she's quality. That comes later.
We see this almost everyday on these posts with threads dealing with "I just found out she has had one night stands, but I always thought she was different", "Found out GF had a threesome." "My girl won't put out because she's religious, but she's not a virging", type of situations. If you got game and high value, don't judge or apologize for her wanting your meat. It is just what women want.