I'd also say the WHW is one of the most enjoyable rides I've been on.
Great scenery and there are some great bits of riding too – conic hill on the way down; some of the singletrack bits before/after Rowardennan; fast fireroad descents through the forest on the way to Tyndrum; rocky descent down to Kingshouse; all of the rocky section between Kingshouse & Devils Staircase; then the descent to Kinlochleven.
It's very easy to organise too. There aren't that many multi-day rides you could do without a map, and it's quite well served in terms of accommodation and shops.
And transport links are good for in/out and emergency bailouts.
Plus it's something everyone knows, so very easy to chat about and a good thing to say "I've done that"