Nice article and reflection of your experiences. Strongly agree with this part, “I’ve gained in knowledge is much more valuable”.

The whole experience you’ve described helps insulate you from future disasters. Better to get the pain out of the way quickly and early!

Regarding offsetting gains for tax purposes, you mentioned this, “Even if that means buying back right away.”

Are you familiar with the “Wash sale” rule?

Something to keep in mind: https://en.wikipedia.org/wiki/Wash_sale