I have a wye on my layout, partly because it is useful for turning entire trains but mainly because it is a common feature of the railways in South Africa, and my layout is African profile. Here we call it a triangle, not a wye. My layout is in a forty foot shipping container, so space is not an issue (as with real African railways).
And greetings to the chap with Geordie connections - wye aye, man. Howay the lads!