Your Last Wish.......Power of Attorney...
It could be a very sensible and important decision to appoint a trust worthy person to look after your affairs in the later stage of life. Minor mental ailments may prevent you from being able to make day to day decisions. Attending to your shopping, bills, utility like heating and banking.
...If done, it would give you daily freedom to enjoy your days in a relaxed manner knowing that person is looking after you affairs,

What is a Power of Attorney?

..A Power of Attorney (or POA) is a legal document that designates one or more persons who can make critical decisions on your behalf if you are unable to make these decisions yourself.
...This situation can arise if you are out of the country on holidays or travelling for business, or if you ever become debilitated due to an injury or illness.
The person(s) you designate in your Power Of Attorney is referred to, as your legal representative
...They may also be called your agent or representative. There are variations on how Power of Attorney works in different parts of the UK.