Does it look nice?
Will it get broken?
Do you want to give it a go?
Give it a go.
Spending £20 on liquor and then putting it in a decanter is not the same as throwing £100+ bottles of liquor around.
I usually buy something new, decant half the bottle in and that's my sippin' whisky sorted. Other half of the bottle normally hangs around for later side by side comparisons.
Need? No
Want? Maybe
I was given one. I use it. It looks nice.