Would it be any different if you used a different tool and/or programmed everything manually?
In my experience, it would be 50x worse because Excel handles for you a lot of things that are extremely time consuming to code manually. (eg. error handling)
Can you really say with a strait face that you think BTC's volatility is worse than literally losing your bank account with all it's content?!
People who live in places like the US forget that the average fiat currency has a lifespan of roughly half your life expectancy (37yr irrc).