You think in 30 years you will still have that 5 btc? Debt is a trap. Your finances can go wrong but that debt with interest will hang over your head your whole life.
Discussion
You'd probably still have 4. Which is way better then if you sold it all to begin with.
Being a slave for 30 is not worth any amount of BTC.
Good point
Mountain lions don't need housing but people do. The house payments get cheaper each month with bitcoin, and your not slaving if you have 5 btc in savings. You have plenty of time to fund and start your own business or work to replace sats.