You really think that SSD are going to last all that long?
In my time of using computers I have used:
- Punch cards
- Paper tape
- Magnetic Tape - Reel to Reel, Cassette, 1/4 inch cassettes, DLT
- Cassette Tape
- Stringy Floppy
- Floppy disk - 3.5, 5.25 and 8 inch
- Hard drives - MFM, RRL, IATA, SATA I-III, SCSI, SAS - refers to interface
- Iomega - including Zip drives
- CD, DVD, Blu-Ray and had some association with glass optical drives.
- Smart Media, MMC, SD, SDHC, SDHX - micro SD
- SSD
Each of these format/media have either come or gone over the last 40 years. SSD's will go away as soon as the next thing comes down the line. Same for data interfaces, RS232, Parallel, ISA, EISA, Micro Channel, PCI, S-Bus, USB v1-3.1, Firewire, iS400 etc. etc. Just try and find a modern motherboard with a serial port, parallel port or now even a USB-A. These things do not exist and SSD interfaces will go away too. This is the dilemma of computers, by default they are not backwards compatible. We have government systems that are 30-40 years old, you can not port the software from the existing system to new systems.
For example here is story about the airframe manufacture out here where I live. (I was working for them at the time in computer support) All of the documentation (memos not design stuff - that is another can of worms) for older versions of the airframes at the time had been written by the secretaries on DEC proprietary word processors. They had to write their own software to migrate all of those documents to Microsoft Word (Text based version - before Windows) five or six years later they had to convert all of those documents into Word for Windows. Same with spreadsheets (Lotus 123 to Excel) and don't get me started on databases (RBase IV, DBase, Paradox) PC stuff had to be converted to Access (whoa is me). The powers that be wanted to give everyone dumb X-Terminals with huge UNIX servers hidden away in the closet. That effort failed once the bean counters figured out how much it would cost to supply all the worker bees with the equivalent capability of a PC - and convert those files (see the lists above) to something that ran on UNIX. The cost to convert all the data would cost more that twice the value of the company partly due to the processing time it would take to convert from (at the time) MS-DOS programs to UNIX. Add into this that the database, document management (word processors) and spreadsheet programs were very few and very far between in the UNIX world. The model in the UNIX world at that time was software rental (al la Adobe), but the word processor (document management) system cost 5K USD per seat per year. USA (UNIX Server Architecture) died an inglorious death as it was just not cost effective.
Sorry for the diatribe, but thinking that any current technology is going to be available in 50 years, heck even 10 years, is living in a dream land. The best you can do is upgrade to the latest stuff and hope it just does not break. The only way you can assure that your pictures will be available for future generations is to print them on paper, digital images are very fragile and will disappear quite quickly if given half a chance. Add into this that when you go to your great reward, you progeny will most likely throw all your "stuff" out. In 30 years who is going to want to deal with 300 DVD's or 10 hard drives that you can't even attach to what ever device is in vouge?
I am getting too old to worry all that much any more. Remember, there were quite a few greenhouses made with glass plates from the US Civil War once it was over, because people did not want to look at all those images of dead guys laying around in the fields.