Most scientists are not strict materialists. The materialists say that life, since it's made up of atoms, molecules, and chemical reactions, is just simply chemistry and nothing else and that life originated by chance chemical reactions. Now, if life consists merely of chemistry, and nothing but chemistry, the best way to understand its real potentialities is to look at some of the chemical substances of life. Worms, insects, mice, and other creatures were thought to be created by materials in their environment. All living things come into existence from parents.
All creatures have a parent of some kind.
At the moment of conception, the DNA code goes to work, using nutrients to build an entire human body, brain, and personality from a single fertilized egg cell. No one has ever found an organism that never had a parent of some sort. Today, this is one of the most accepted facts in biology. All living things are produced from one or more parents. Materialists assume life arose spontaneously somewhere in ancient Earth's water supply water which contained absolutely no life, just minerals and chemical substances used by living things.