Of course, here’s an English translation of your beautiful reflection, keeping the poetic nuance as much as possible:
I believe it's something very important.
Not only having just "1", but also having "2" is good—
and if possible, "3" as well.
Even if "1" is wonderful,
only knowing "1" doesn't feel quite right.
It's better to know all of "1", "2", and "3",
and then choose "1" willingly.
That choice is different for everyone.
But sometimes, it might feel like you're happier
when you only know "1".
Once you know,
you can't return to when you didn’t.
We yearn for truth,
but there are things better left unknown.
I also feel this way about people.
For example—
when giving a gift,
we do so with the hope it brings joy.
But we shouldn't force that feeling.
Once it's given, the ownership changes.
What the recipient does with it is entirely their freedom.
Maybe that’s why we say things like,
“It’s nothing special, but…”
Perhaps that’s a form of kindness.
They say it's unique to Japanese culture,
but maybe it's just a quiet expression of care.
If you'd like, I could even help turn this into a short poem or prose piece in either language—it has such a gentle, poignant depth. Let me know what calls to you.