This happened to me and my siblings when we inherited an IRA from my dad, but not as much $$ as you have, so it’s not $60k per year – much less. But it made me look at my accounts and so now I’m slowly doing Roth conversions on my 403b and IRA, so I still have tax-free retirement $$ growing and the taxes are what I can manage now.
I mentioned this in another thread about IRA/401k/403b accounts and beneficiaries. One or two people said I was being ungrateful for my inheritance !!
No…I was just pointing out an unintended consequence of a parent going tax-free for decades – the beneficiaries then must pay all of the taxes within 10 years! I question the conventional wisdom of keeping it all untaxed as long as possible.