I can't look at the physical universe and conclude "random chance." - Zoos
False dichotomy - "Random chance" is not the alternative to intelligent design.
When somebody discovers that their beliefs are false I think it is normal to assume hopefully that at least their most core beliefs are true.
It takes time and courage to hold everything up to honest scrutiny. I'm always a bit puzzled by anybody who goes straight from JW to unbeliever. Did they ever actually believe?