I probably enjoy getting electronics just to learn all about them and master them as much or more than using them. I have started in on surveillance cameras, reading whatever I found, and now ordering some from B&H. I've installed a app on another Toy, Amazon Fire TV that lets me connect with and control the cameras, and have been tearing my hair out trying to configure my NAS to share its space with files from the cameras.
I have two NAS units, one with 4 and one with 6 drives. The 6 drive unit backs up the 4 drive unit. Finally, I reformatted the six drives and recreated two volumes, one with 5 disks in Raid 5 to continue backing up my other system, and a single disk volume to save surveillance video. Then, the first Camera I bought froze up while formatting the drive and died. So its on its way back, and a replacement along with a 2nd one is on its way. I keep spending more, a 1000 ft spool of outdoor ethernet cable with pure copper conductors to run POE about 80 ft to one unit, and about the same distance to the other. I'm still in doubt as to the need for a NVR, so I'm doing the NAS solution first. I have hard drives around everywhere, so thats one thing I will not need.
I'd love to have a $20k midrange Axis unit, but am sticking with more reasonably priced items in the $400-$1K range. Definitely a cut above the cheap cameras sold for homes, but not into the larger business category.
I'm getting up into my mid 70's, but find that I still enjoy learning more about everything. I have a small online business that justifies purchasing the toys.