Nice start. I have a decent collection (not huge only my favorites) of PS2, PS3 and PS4 games. I also collect a ton of DVDs. CDs and records too. I no longer collect tape cassettes or VHS due to the amount of tapes I've had to throw away over the years. Magnetic tapes do not last forever, they often go bad after 10 or so years.
One thing to keep in mind is having offline digital backups of media is important too. 8TB to 22TB external drives are expensive but they can store a TON of digital media long term and as long as you have two other separate copied drives your media collection should last you a lifetime as long as you keep making contingency backups if one drive happens to fail or stop working. I make it a habit to buy one large external harddrive every single year and I stock them away for future use when need be. If one or two of my current offline drives fail or get corrupted I can take an emergency backup copy and throw all the media onto another external storage drive. Movies, documentaries, tv shows, music, music videos, youtube videos, DIY tutorials, survival guides, you name it I store it. Plus, if you buy a kickass Zidoo media player you can plug and play an offline external harddrive right to your TV, they are compatible up to 16TB drives.