Another wrong notion about swine-flesh is that its consumption lengthens life-span, although this is a pure myth and absurdity. On the contrary, people, who abstain from pork and liquor, have a longer span of life. The Muslims in Central Asia bear a testimony to this truth.
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Take a look at the nature of the pig for example. The pig is naturally lazy and indulgent in sex, it is dirty, greedy and gluttonous. It dislikes sunlight and lacks the spirit and will to "fight." It eats almost anything, be it human excreta or anything foul and unwholesome. Amongst all animal flesh, pork is the favoured cradle of harmful germs. Pork also serves as a carrier of diseases to mankind. It is for this reason that its flesh is not suitable for consumption.

Some people have argued that the "modern pig" reared in farms is given only clean foods, therefore, its flesh should be consumable. The answer is that you may feed the pig on clean, wholesome food, but you can't change its nature. It is still a pig and will always stay so. A pig is not a plant and you cannot change it by bud-grafting.