By "hasty," I mean, "within your lifetime." Guys are extremely reluctant to make commitments. This is because they never feel ready.
"I'm sorry," guys are always telling women, "but I'm just not ready to make a commitment." Guys are in a permanent state of nonreadiness. If guys were turkey breasts, you could put them in a 350-degree oven on July Fourth, and they still wouldn't be done in time for Thanksgiving.

Women have a lot of trouble understanding this. Women ask themselves: How can a guy say he's "not ready" to make a permanent commitment to a woman with whom he is obviously compatible; a woman whom he has been seeing for years; a woman who once drove his dog to the veterinarian in her new car when it (the dog) started making unusual stomach noises and then barfed prolifically after eating an entire birthday cake, including candles, that she made from scratch for him (the guy), the result being that her car will smell like a stadium rest room for the next five years, at the end of which this guy will probably still say he's "not ready"? And how come this same guy was somehow capable, at age seven, of committing himself to a lifelong, passionate, win-or-lose relationship with the Kansas City Royals, who have never so much as sent him a card?

A lot of women have concluded that the problem is that guys, as a group, have the emotional maturity of hamsters. No, this is not the case. A hamster is much more capable of making a lasting commitment to a woman, especially if she gives it those little food pellets. Whereas a guy, in a relationship, will consume the pellets of companionship, and he will run on the exercise wheel of lust; but as soon as he senses that the door of commitment is about to close and trap him in the wire cage of true intimacy, he'll squirm out, scamper across the kitchen floor of uncertainty and hide under the refrigerator of non-readiness.

This is natural behavior. Guys are born with a fundamental, genetically transmitted mental condition known to psychologists as: The Fear That If You Get Attached to a Woman, Some Unattached Guy, Somewhere, Will Be Having More Fun Than You. This is why all married guys assume that all unmarried guys lead lives of constant excitement involving hot tubs full of naked international fashion models; whereas in fact for most unmarried guys, the climax of the typical evening is watching an infomercial for Hair-in-a-Spraycan while eating onion dip straight from the container. (This is also true of married guys, although statistically they are far more likely to be using a spoon.)

So guys are extremely reluctant to make commitments, or even to take any steps that might lead to commitment. This is why, when a guy goes out on a date with a woman and finds himself really liking her, he often will demonstrate his affection by avoiding her for the rest of his life.

Women are puzzled by this, "I don't understand," they say, "We had such a great time! Why doesn't he call?" The reason is that the guy, using the linear guy thought process, has realized that if he takes her out again, he'll probably like her even more, so he'll take her out again, and eventually they'll fall in love with each other, and they'll get married, and they'll have children, and then they'll have grandchildren, and eventually they'll retire and take a trip around the world, and they'll be walking hand-in-hand on some spectacular beach in the South Pacific, reminiscing about the lifetime of experiences they've shared together, and then several naked international fashion models will walk up and invite him to join them in a hot tub, and he won't be able to do it.