Living off bitcoin without selling bitcoin.

I'm trying to get my head around how to borrow against Bitcoin continuously without making any payments towards the debt or the interest. Effectively a tax free income without selling the bitcoin. I've been having a play around with a few different models. Some are really bullish and look like I'll be living on a private yacht in Monaco, and some are really conservative like this one. It's a 20 year retirement plan starting in 2030. I've used 1 Bitcoin to keep it simple and assumed a 25% cagr from where we are today. So in 2030 it assumes bitcoin is at £204,711. The loan to value scales up to peak at 20% at 12% interest so the first loan is for £14,331 plus interest. Each year I've borrowed 3% more to keep inline with official inflation in the UK. It's doesn't sound like a huge amount of money but it's tax free and would like cover most people's bills, rent and shopping. This model leaves a ridiculous amount of wiggle room. It assumes bitcoin will be worth over 17 million by 2049 and my loan will only be 1.4 million. Probably way too bullish. I'm guessing that would make the market cap of bitcoin 350 trillion + My math probably isn't mathing but it's a fun exercise. I've never really understood how it works to borrow and live off bitcoin without selling any of the bitcoin or make any payments. But now I feel like i get it. Even if my numbers are off. Or maybe I

don't get it. I'll await the onslaught Has anyone else had a play with bitcoin retirement models? Any tips to improve

what I'm doing? Or should I just quit all together?