Seems like everybody has reasons to justify or not justify FSD. That is what makes it so great to have as an option. Everybody gets to choose.
Some other points is that it does not really net cost $7,000 as you will get some of that back when you sell your car.
Pricing might go up in the future to make this current cost a good choice. (Could also go down, making a bad choice)
You can roll the cost into your loan if you order before delivery. Later on you must pay only all cash (plus sales tax)
If leasing, you will never pay the full $7,000, only the depreciated amount.
The more you use Autopilot, the more good (and bad) things you learn about it. Knowledgible owners know when it is a relaxing alternative to let it have it's way. In heavy traffic, or in the center lanes of an open highway it is priceless. In the far right lane with lots of on/off ramps or construction zones...not so much.
No matter. Everyone gets to make their choice and justify it in any way they choose.