Wow, 1TB of photos? This is just astonishing to me. What is the use of so many images? As an ex semi-pro photographer, one of the things I realized is that what makes photographs special to people, even family photographs, is the rarity of them.
So I just cannot understand taking and holding on to this many images. I would find just managing the images would take away time and money from my family.
Google Photos makes it a no-brainer to manage, which largely contributed to the size inflation (which is also why searching and indexing have become critical to us)
PS: I declared bankruptcy on photo management a long time ago. Reducing my library to a decent size is totally possible but would take months of sifting through near duplicates.
For me the problem is that I'm not a great photographer. I take loads of bad photos. It would take me far too much time to go through all of them and decide which ones to keep.
Also, my wife and I sometimes look at old photos for reasons that have nothing to do with the quality of the photo or even with reminiscing. Instead, we may look for some specific fact (mole, dental issue, dress, haircut, domestic repairs, flooded footpaths, etc). The more photos we keep, the more likely it is that we can find what we're looking for.