If someone has his seed phrase on a steel or titanium sheet, there is possibility the person can lose his seed phrase during war. I mean if a war can destroy diamond which is the strongest substance on earth. Many people have there seed phrase written on a paper.

Despite that I prefer bitcoin as the number 1 asset, I do not think it is worth it not to have alternatives which are physical. Also someone's business is part of it.

I believe in diversifying.