Basically, there is no evidence or demonstrated necessity for God. The only arguments I've seen to counter this are shaky attempts at logical arguments (which are generally useless as evidence anyway)
Regarding your first point, do you mean:
(1) there is no evidence for you personally?
Or you do you mean
(2) there is no evidence at all for anyone?
If you mean:
(1) Then are you saying that you are genuinely looking for evidence? Or have you decided there is no evidence and therefore will not look for, or further consider anything that other people deem to be evidence. I think what you really mean is that you have rejected what other people who do actually believe in God consider to be the evidence
(2) If you mean no evidence for anyone at all, then that clearly is fallacious. I for one think there is evidence for the existence of God, and there are clearly millions of people who also believe in God. For a single individual to say that there is no evidence for themselves AND everyone else as well is clearly absurb.
What you can say is that you dont accept the evidence, you dont want to believe the evidence or that you are not searching for the evidence and I expect the later to be more accurate. The question then follows from this position is to turn to you and ask either (i) why you dont accept the evidence, and /or (ii) where have you been looking for the evidence?
But the position that there is no evidence at all is clearly false.
If I said there is no evidence for 5 kilometre high building in the middle of London, then that is clearly false and easily demonstrated to be false. You will also not find one single person on this planet that believes that.
You will find more than one single person who believes in God.
Your second point regarding the demonstrated necessity for God:
This can also be established quite clearly from ironically reading great Atheistic works. There are a number of Atheist quotes that prove that we really need God. Try reading Nietzsche, Sartre, Russell, Hume and others
Sartre said I needed God, I reached out for religion, I longed for it, it was the remedy. Had it been denied me I would have invented it myself
Freud said It would be very nice if there were a God and he admitted a sense of mans insignificance in the face of the universe
Nietzsche said To the last of all that are lonely, oh, come back!....And my hearts final flame flares up for thee! Oh, come back, My unknown God! My pain! My last-happiness
.
Camus said For anyone who is alone, without God and without a master, the weight of days is dreadful
Russell said Even when someone feels nearest to other people, something seems to obstinately belong to God
Russell also said I care passionately for this world and many things and people in it, and yet
.what is it all? There must be something more important one feels, though I dont believe there is
Here in the last quote Russell is essentially saying I need God
.but I wont believe in him
I can pull out more quotes if need be, as there are many further examples where individuals desperation to understand their own existence causes them to reach out in necessity for God! The existence of God amounts one of choice ultimately:
Theists admit it
Atheists reveal it
I have to say I really like discussing these matters with Atheists it really strengthens my faith when I realise what weak ground Atheism is actually based on..