I tried (key word "tried") to replace the left front bearing assembly since it was rumbling. I took everything apart, soaked with PB Blaster, banged and pried, nothing worked. Finally gave up (after many hours), put everything back together and took to my mechanic. He eneded up having to remove the entire spindle and use a rather large press and it still was tough to get out. Found a bad ball joint in the process as well!
Also, I asked whether the other bearing assembly should be done and his opinion was if it's not making noise, leave it for another time. He told me that usually, front bearing failures are the result of some sort of impact creating a tiny flat spot on the bearing and then, over time, this causes more wear until there is a quite audible rumble (that's what I had).
After he said that, I remembered that a couple of years earlier, I had hit a curb with the left front wheel and even had to have the alignment re-done. That, more than likely was the cause. Also, most of what you see on You Tube is guys who either live in a dry climate with no snow and salt or who pull the bearing first, reassemble and then film the take apart showing how "easy" it is. Thet's the trick that fooled me.
Glad everything seems to have worked out for you.