Is death necessary?

If we never died then we would not have much motivation to do anything good.

Very much so.
If nothing died, the space for someone else to live would be drastically cut down.
Imagine if everything that ever lived was still alive...... It would be a complete mess.
Death is part of life, yin/yang so to speak.
Heck fertilizer is decomposing life, and it is able to kick start the development of life in plants.
So that's like a transference of energy, life energy maybe?

Death is a portal to new life!

U BETER NOT be thinking about killin urself or i will kill myself an then jake will kill himself and that wood NOT be good:(

Yes it seems that it is necessary because from the moment that we are born we start to die. Like others have said the world would be overrun but I always remember reading about the amoeba who, is a sense, never dies because there is no body . It is simply a  one cell creature that splits and forms two just like itself. But the vast majority of organisms are not like that .They are much more complex.

Death comes to most plants and trees eventually, except evergreens, which keep on going all year round even though some bits drop off.
In human beings, death comes to those who abuse their bodies and minds.
The Scriptures urge purity of mind, body and heart.
Those who abide by His laws, Jesus says, will never see death or corruption. --AMEN.

Depends...

Death is a part of life. Nobody will live forever.

Death, is very necessary...

I dont like the idea of death bien nessecary but it kinda is!

I don't know about being neccessary, but it is certainly inevitable .

Well, people are miserable here on Earth, and if you get saved by Jesus, God gave the option of Heaven for us to have eternal life.