Who said that there is no rebirth? One is reborn as all this world, each baby and blade of grass, which are our 10,000 other faces (as much as your left eye is your right eye on the left!). Our good or harmful acts have consequences which impact the world, not only our own present life, but the lives of sentient beings near and far, rippling onward, endlessly through time.
If you are mainly interested in what this practice can do for YOUR PERSONAL rebirths, then that would be a selfish attitude, plus hopeless from a Buddhist point of view, as there is no "YOUR PERSONAL" beyond the little self!
In our Bodhisattva Vow, our practice is never for ourself alone, but for rescue of all sentient beings everywhere, now or then, here and far. In fact,
your fixation on
your desires for "YOUR PERSONAL" is the root of all Dukkha! Though some folks practice for what "I" can get out of it, there is no "I" nor "not I" which can be gotten! There is never an "our self," and all is our self, True Self, No Self which is All Selves. The Buddha's realization under the Bodhi Tree: "I and all beings together realize enlightenment." Above and Below, All are the Honored One Alone.
Yes, we believe this too. Better said, we believe both.
We are already liberated, always were and always will be, but most sentient being do not realize so. They bury this fact in greed, anger and divided thinking in ignorance. Thus, we must walk the path to realize so, acting in peace and gentleness in every step, embodying the Buddhist way.
If someone thinks, "I am already liberated, thus I don't need to do anything," then they do not understand. If someone thinks that liberation is lifetimes away, and not in this immediate thought, word and act right here and now, and what one chooses to do with it for good or bad, then they do not understand.
There may be a time to watch some Netflix, but there is also a time to sit Zazen, and times to put this Path into Practice in each moment.
We believe in free will, thus we freely choose to sit. One sits, as the Buddha chose to sit under the Tree. One sits as the morning star shining, nothing lacking nor anything to add to this shining light.
Gassho, J
SatTodayLAH