I had a paid Flickr account before Yahoo bought it. I was less than impressed when Yahoo bought it and terminated the paid account system only to bring it back again. SmugMug wants even more money BUT... they also sell your photos. From what I read it is one of those magazine subscription sort of deals where you have to tell them not to sell/ use your photos. If you do not tell them not to then they assume you are ok with them doing as they please. This is why I removed all my photos from Flickr right after SmugMug took over.
I haven't deleted my account or my groups there. Mostly because I hate to finish them off when there isn't anywhere else I have found to move them to. I have looked at the tried self hosted options but setting it all up takes time and figuring out software so I'm making slow progress.
Also, if you need a simple, quick way to download your photos from Flickr I found https://downloadair.ghusse.com/
which worked really well and was free to use.