some people just dont have that feeling during sex
My opinion is no. This actually has many facets. Sometimes when we get really turned on by something we see in porn, its because we want it acted out and there's nothing wrong with that (as long as its not a harm to self or others). This mostly happens with guys though because, for example, they like to emulate what they see in porn but most don't realize its unrealistic i.e. every girl doesn't talk dirty or wants her hair pulled or wants to have her butt spanked or whatever. But, for a female, I may suggest a couple of things. The first is the obvious one - bring it up to the guy if you trust him as in a long-term relationship. Say, "Well, I must confess that this [whatever it may be] really gets me going and will bring me to orgasm." If he wants to please you [and which guy wouldn't want to comply with a sexual request from a woman], then I'm sure he will be game. If you have a few sexcapades before feeling comfortable enough to bring it up, then just imagine it or why not stimulate your own clit while having sex? I don't believe you'll find many guys that won't find that awesome and a real turn-on! I wouldn't say at all that you're at risk for being unsatisfiable. Just go for what you want! Nothing wrong with that! Keep us posted . . .