>>Hi,
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>>Over many years I meticulously collect all photos that my wife and I took during vacations, holidays, family events, etc. I store all these photos on my computer. Of course I backup the drive. But for now only I have access to these photos. And since my doctor told me a shocking news that I will not live forever, I want to copy/place these files in the cloud.
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>More shocking news: clouds suffer from blue sky. IOW, we don't live forever, and neither does the cloud. But assume that the cloud will survive the years you expect it to.
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>>The purpose is so that the kids can see them, any time they want to (the kids are adults and don't live at home).
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>But they do! They call those places home, you can imagine.
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>> Even now, we just came back from a Euro vacation and I copied tons of photos from my iPhone to my computer. But why not let kids see them now, if they want to.
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>>So I want to create/establish a folder in the cloud for the entire family so that they would be able to log in and see whatever they want to see. Then I will stop worrying about how to transfer the files to them in about 100 years, when I am gone.
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>As my mother-in-law used to say, "may I repeat this toast on your 100th birthday".
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>>I thought about dropbox but it seems to be expensive. About $100 a year for the size I would need. Right now my "pictures" folder has about 60 GB of files.
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>>What other options would you suggest? I don't mind paying, reasonably. And I would like some security so that our personal life does not become a target of some creep.
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>I use dropbox for such purposes, just... not all 147 GiB (157.000 files), just select photos. And then when the freebie space gets near full, I announce the intent to delete, and they simply copy the shared folder somewhere else, so it won't be deleted when I delete from dropbox. Of course, our daughters are tech-savvy (two programmers, one digital artist) but, really, I expect your offspring to be anything but technically illiterate. I know the filesystem is not intuitive at all, and all the attempts to make it simpler only made it worse, but still. How hard can it be?

First, thank you for your input. Second, my daughters are tech-savvy to the extent of any young person today in America. But they are not in the tech field.
I am still considering dropbox. I do have a paid dropbox that I use for my personal needs (mainly so that I can get some files from PC to iPad). I pay about $100 per year but I don't remember how much space it gives me. As I said, currently my photos occupy about 60 GB and will grow. So, say, I need 100 GB for family pictures, I don't know if I can place all my photos in the dropbox. And I have no problem giving my kids the dropbox email and password. By concern is if, for any reasons, I stop paying for the dropbox, the photos will be lost. So I will need to arrange a way for them to pick up the tab, if I am not able to pay (physically, not financially).
Therefore, unless someone suggests a "better" approach, I will go with dropbox.