[ci5er]

I may be an atypical and less social (more asocial?) than others. Or maybe I'm old and impatient. Or all the above.

Making me fill out, really anything, before I can drive the app around at all is a sure way to make me "nope" right out of there. Now, I understand that you said "don't have to", but a big screen of form(s) is an intimidating clue that you will want more from me than I suspect I am willing to give. I don't even know who you are yet.

Incrementally adding information during the use of the application to make operation/data/context more relevant or useful is fine. Not filling out a list of interests, for gods sake. And not 20 things, mind.

YMMV.