Absolutely.

1) show that you’re a douche that only wants to screw
2) train this girl to be even more difficult for the next guy
3) because now she’s mad that you screwed her and disappeared, and you were such a pushy ass about it

If you only want to screw, well, you’re a douche. the best way to get laid is to be someone that women want to have sex with, so you don’t have to be persistent. Women are far more influenced by the physical than men, don’t be fooled. On average, women have sex with orders of magnitude more partners than men on average. this means a large number of women hare having sex with the same small group of guys. Now, this isn’t mean to be a rant on women. It’s just a fact. Women like having sex, a lot. And they do it a lot. Several times a day, with different guys. You don’t have to talk them into it. They want to screw every waking minute of the day. Their whole life revolves around sex. Women wear mini-skits, high-heels, wonder bras, makeup; all to be sexually appealing. their world revolves around their sex appeal. All you have to do is NOT be on the list of things they don’t like. Patience is THE MOST important virtue you can have. It helps everything. It helps you learn, it helps her develop her own rapport. All she really needs is to know that you exist, and have a favorable thought about you. Sex is much better when she’s asking you for it, than you managing to get in her ASAP. Her mind won’t be in it, she’ll be thinking of all the things that make her uncomfortable, if she really wants to be doing this, etc. Sex with you, as she will rate it, won’t be that great. Sex is good for her when it’s her idea and she’s banging down your door to get you. And she’ll remember that it was good. It isn’t meant to be an insult to women, I really feel sorry for most of them. Estrogen is a powerful chemical. Unlike men, women are encouraged to give in to their hormones, while men are insulted for being men. The easiest and best way to push her buttons, is to let her push her own buttons for you. Be the one who says no every now and then. Be the one who brings it up, but says it’s not time. You’re sexual, but you’re not a douche bag. Let her know you think of her that way, but don’t be focused on it. Bring sexual topics up in a round-about way, as a tangent to a different discussion. Then get back to another subject. Tease her with it and don’t be afraid of it. Just like physically, women warm up slower. That’s a false stereotype, too. Once you adapt this approach, you’ll find you are more fulfilled, and that you perform better. You’ll understand more of how they work, and naturally get better, because you’ll be able to relate. It isn’t a male or female concept, it’s human. It’s deeper. an even if it’s not forever, you’ll both appreciate it and enjoy it, and come back for more.

In the beginning when you’re refining your skills, yes. Otherwise you’ll be placing girls on pedestals and not approaching anything because you’re way to scared. Approaching a girl that you’re not that attracted too can ease your nerves. Straight after that interaction, you’ll then be able to approach a better look girl without being so nervous. They are called throw away sets in the community, for the sole purpose on growing some balls.