When I was deeply religious, I had many euphoric experiences that I would attribute as spiritual connections with god. When I left Christianity, I had the same experiences with other gods when exploring other faiths. Since leaving religion altogether, I don't really have spiritual experiences like that any more.
When I go for a hike in the woods and think about that when I die, no one will know who I am in 100 years, my body will be utilized by nature in an endless cycle, and that the consequences of my actions will influence those who live after my life ends are beautiful things to me. I've replaced seeking gods with seeking a closer connection to the world and to reality as a whole, and in taking that knowledge and doing the best I can with it for myself and others. It's basic, but it's all I need.
Hmmm, not exactly spiritual, though. Does one need to involve spirits or the supernatural for something to be spiritual? Where is the line drawn between spiritual philosophy and mundane philosophy?