For a while I have personally begun to see spiritual principles as universal.
And that there are a number of approaches that yield these principles.
In my experience religion (of all stripes) is hostile to authentic human spirituality since it cannot be patented, sold, bought or controlled (by the ruling religious clergy class). Religiosity is substituted in its place, with the clergy then conflating religiosity with spirituality (we haven't stolen your spirituality...).
Buddhism for example it seems is generally not regarded or conducted as a religion, and is relatively open and inclusive.
Much like so called "Christianity" was supposed to have been, save for the relentless efforts of the clergy.
I have heard horror stories emanating from some extreme "Buddhist" groups though. A
friend was regarded and treated as having joined Satan after leaving a
particularly controlling "Buddhist" group.