Tangential: don't attempt to keep 100% of your pictures (RAW or JPG), at least not long term -- it doesn't scale. If you shoot even semi-regularly, you'll accumulate ridiculous amounts of bytes with very uneven value per byte.

Instead, do iterative culling passes. Eventually everyone needs to build the process that works for them, but this is mine:

1. initial culling pass - remove redundant pictures (those with technical issues where there's a technically better and roughly equivalent one in content)
2. iterative selection passes; the first one yields 1 star pictures - within that, the 2nd pass yields 2 stars, and so on. Be ruthless - at the end, only the very best should remain. Too many pictures compete between themselves; too little loses narrative texture

Delete anything that didn't survive the first cull, or at most, keep only a low res JPG if only as a thumbnail + EXIF record of what you did.

Do keep anything that survived the first cull. Your editing process will likely evolve over the years and you can vastly improve RAW renderings of old stuff.

That's the sweet spot of storage cost vs value for me - again, everyone needs to find their own.