Then what is the default position here? What is it that gives me sole burden of proof?
It is your experience that is driving your claim, so the burden of proof is quite clearly yours.
I don't go down the default route that there is no God myself since I think 'God' is a meaningless and incoherent notion to start with: I would, in effect, be saying that the default is that there is an absence of something that is so meaningless and incoherent that nothing can be said about it that would sufficient enough to come to a view regarding it.
I can, of course, see that a 'the default position is that there is no God' could well be a convenient shorthand that could include the above, but it isn't an approach I make much use of since I think far safer ground is to found in considered arguments offered by some God enthusiasts. My view then is that there is no basis to entertain 'God' as being a serious proposition until such times as someone says something meaningful about it that isn't fallacious or incoherent.