If spiders didnt exist, how would that affect the insects population ?!

If spiders didnt exist, how would that affect the insects population ?

Spiders have their purpose like them or not as do Rats Cockroaches Worms and so on. Think of an apple tree it's leaves Blossoms it's fruits beautiful to behold overground. Now think of it's roots a horrible knotty tangled mess nothing good looking there. But without those horrible things under ground no apple tree could appear. All these ugly/horrible things have a purpose in nature.
Now take us Humans the biggest wasters God created. And whats more it's in vain we wash in vain perfume ourselves WE STINK. A lot of insects have become extinct as a result of insecticides and we will suffer for the likes of that in the near future. Never kill a spider spiders are fly traps and we know where flies have been don't we. Put the spider outside if you don't like it hunt it onto a sheet of paper and out the back door.