Now, rationally, I suspect the answer is "Of course!". But I'm looking for general advice, if my fellow Tildesians would be so kind.

This question has arisen while investigating opening a Monzo account. Apparently, you can lock away some money for 12 months and get 5.3% AER interest on it - meaning for every, say, £1,000 I put in, I get £50 back, right?

My question: is that really worth it, in the grand scheme of things? Even if I put in £10,000, I'd be locking myself out of that much money for a grand total of £500. I understand that's a lot to some people (even me), but it hardly seems worth it.

Perhaps there's something I'm missing. Perhaps some bad maths on my part or some other type of interest that I don't know about. All advice is welcome and appreciated!

Lately I've been thinking about withdrawing most if not all my money off the bank and investing in a safe box, but I'm not sure how wise of a decision that is. How does everyone here go about that? Do you keep your money in the bank? Do you have a safe box at home? Why one over the other? Do you invest some of it, say in things like cryptocurrencies/stocks? What would you recommend or advice someone to do in regards to this if you could?