I've mentioned before, I gave up on faith many years ago. But still, I enjoy the rituals.
Some are peaceful (like the ritual of prayer, which I liken to meditation), while others allow a time for reflection. Some of the most genuine moments of introspection in my life came during communion, for example.
I don't think one has to believe in a god to participate in religious rituals; one simply must have a desire for spirituality.
It's been decades since I last participated in one of my favorite rituals: feet washing. While a kid--between 10 and 17 years of age--the church I attended weekly washed feet every fourth Sunday as part of communion services.
Washing feet was a demonstration of humility, something bible stories tell us was done to Jesus, and to others by Jesus as a sign of fellowship and love.
Even during those years I was seriously debating God's existence, I enjoyed the ritual of feet washing. As strange a practice as it is--and it does seem quite strange, looking back-- there was something about it that created a unique, intimate relationship with others. With or without God as part of the mix, the act brought a sense of humility, fellowship and love to the congregation.
We need more of that in today's world.