‘My life could be cut short’: I’m 55, married with $4.3 million and have a brain tumor. Should I buy a $210,000 custom Porsche?

I live in Denver, Colo., and I am in a blended marriage in which my wife and I maintain separate finances and manage our incomes independently. We split household expenses equally, including groceries, utilities and home maintenance. Fortunately, I am covered under her health-insurance plan.

I have two adult sons who have completed college, and I am entirely debt-free, with no mortgage, auto loans or other outstanding obligations. My net worth is $4.3 million. The rise (and risks) of Buy Now Pay Later Play video: The rise (and risks) of Buy Now Pay Later Of that, $2.6 million is in a traditional IRA.

I receive $154,000 a year before taxes through a substantially equal periodic payment (SEPP) arrangement, which will last for 4.5 years. The remaining $1.7 million is in a taxable brokerage account, including a $300,000 cash reserve. Don’t Short Yourself offers weekly money tips to help you earn it, stack it and grow it.

I would like to receive updates and special offers from Dow Jones and affiliates. I can unsubscribe at any time. I am considering purchasing a custom Porsche Cayenne Turbo Electric for $210,000, paying cash.

I also intend to use the trade-in value of my current vehicle to reduce the state sales tax. On paper, spending 5% of my net worth on a rapidly depreciating asset seems extravagant. **Don’t miss:**‘Showy jewelry and fancy cars hold no appeal’: We have a 99% chance of outliving our life savings. If this were a purely mathematical equation, spending so much on a rapidly depreciating asset might raise an eyebrow.

But there is a significant variable: I have a brain tumor. It is entirely possible that I will live a long, full and uninterrupted life. It is also possible that my time will be cut short.