For most people, orgasm from intercourse is less intense because their own masturbation pattern differs from the sensation of arousal or response when they are with someone. For both men and women, relationship sex can be physically painful and the inability to resolve the pain or effectively discuss it with their partner leads to the desiring relationship sex less or avoiding it A person is bored A person is bored with their relationship and wants to play out a fantasy in their head A person is stressed Because they like it They don't have to worry about getting rejected by their partner Their partner is sick, has their period or just doesn't want it when the partner does They want to do it quick or don't have the time required for relationship sex Their partner is traveling or away from their partner It's convenient, like in the shower in the morning or evening It is their best attempt to remain faithful to the marriage because they are really unhappy and don't have anyway to resolve marital conflict outside the bedroom They do not desire the kind of sex they will have with their partner It's fun They want to indulge in a fantasy that they are: If you've masturbated and enjoy those feelings and activities, and are considering sex with a partner, then you have some other things to consider which are also mentioned in the checklist I linked you to. I'd also suggest taking a look at our piece on the human sexual response cycle to get a good idea about what the process of people becoming sexually aroused and then having sex can tend to feel like. That is shifting the conversation and making an emotional linked between two totally different and unrelated topics. Also, most people also know their own bodies very well and are not shy to experiment. However, it does have things in common with other experiences we have. On a physical level, it can feel a like a really great workout or not , a long, hot bath or not , eating everything in your fridge when you just worked up the biggest appetite on the planet or not , taking a well-deserved nap or not , a great massage or not , sitting seriously bored in class for too long or not , scratching an itch or not , like a big, bear hug that goes all through your body or not or like warming our hands on a fire or not. If you are interested in seriously considering or having sex, I'd encourage you to take a look at that checklist. It is like saying that if you want someone to each more sea urchin you will ban them from eating ice cream or anything else sweet. It seems that you have already learned to orgasm through masturbation, which means that you have taught your body to respond to touch. Nothing feels better than a ripe, juicy pussy. Being pure can pertain to sexuality or intercourse. It is also reflects the intersection between political, religious and cultural views that struggle to deal with human sexuality and are often afraid of it and want to control and contain it. By all means, your own masturbation can also tell you a whole lot about what sex feels like. For sure, in order to feel okay about that and enjoy it, I have to have other things taken care of first -- like a desire to have sex in the first place, the privacy and time to enjoy it, trust in my partner and myself, comfort with my body, to have needed birth control and safer sex taken care of and negotiated -- but when all my basic ducks are in a row with my general preparedness for sex, that surprise tends to be an adventure, an often unexpected discovery, much like taking a vacation somewhere familiar, but discovering a new street or hidden beach I never noticed or found before.