You should not introduce sense gratification for maintaining your body. Your body can be maintained very nicely if you take simple food made of rice, wheat, vegetable, little ghee and little milk. That's all. And you can get all these things anywhere, in any part of the world, and you can offer to Kṛṣṇa. Kṛṣṇa also says, patraṁ puṣpaṁ phalaṁ toyaṁ yo me bhaktyā prayacchati (BG 9.26). Any part of the world, any condition of life, you can secure these things. In Africa we have been in the interior African villages. They are supposed to be uncivilized, but I don't think. They have got enough of these things, patraṁ puṣpaṁ phalaṁ toyam, anywhere. And they are being taught by this Kṛṣṇa consciousness movement to offer to Kṛṣṇa and take.
Therefore, this artificial civilization for sense gratification is not very good. It is not good for us. We may gratify our senses while we are living, but when we quit this body, we are completely under the grip of material nature. Prakṛteḥ kriyamāṇāni guṇaiḥ karmāṇi sarvaśaḥ (BG 3.27). And when you are on the clutches of prakṛti, you cannot dictate that "Give me this kind of body." That will be decided by superior authority, daiva netreṇa, karmaṇā daiva ne. These are the scientific knowledge, but unfortunately, there is no culture of this scientific knowledge. Superficially, simply for sense gratification, that is going on in the name of advancement of civilization. Actually it is very risky civilization. Suppose after this body, human form of body, if I get the body of an animal or a tree. There is every chance. Wherefrom the tree comes? Wherefrom the tiger comes, the cat comes, the dog comes? There are demigods also. So you can get any form of life. Dehāntaram. Kṛṣṇa says personally, tathā dehāntara. This is bogus theory that after death everything is finished. No. There is another life, and the species of life are in your form, 8,400,000 of species, and we have to accept, according to our karma, a type of body given by the material nature.