During my working life, I first earned WP in 2000 and have held it non-stop since then, including 4 or so years as a P1. I travelled a lot (by ordinary folks' standards) for work, and that was nearly always on AONEx (DONEx in the early days), so maintaining WP wasn't a problem. I soft landed from P1 to WP in 2019, and have retained WP since then from status extensions.
I most valued First/Flagship/Wing/Pier first lounge access globally, and the business lounge domestically. I also greatly valued the classic award seat release service, where I can't remember a request ever being refused (it might have happened once but I don't remember when/which route). I most recently used that benefit to request release J seats on SYD-YVRvv for December this year. Based on these two things, I feel I have well and truly had significant value from being WP. The final thing that I valued was the extra luggage allowance, which I only used once, on my move to Canada, and my partner and I were able to check in 256kg of luggage (4x32kg each) as P1/partner WPs travelling in First. All of the other benefits were nice to have, but I don't remember thinking "wow" about any of them.
I achieved LTG several years ago, but LTP was introduced towards the end of my working life and I'm 11K status credits shy of LTP. I'm not interested in trying to achieve LTP, although if I'd worked for 3 more years I would have done so.
@AFF Editor did an "intervention" on my FF situation (part of the First Class service on Frequent Flyer Solutions) last year and as a result of that, I've put QFF aside for the time being in favour of Aeroplan (as I'm currently located in Canada). I've already derived immense value from Aeroplan, including doing things that can't be done with QF, like using eUpgrade credits to confirm upgrades on the spot. Now that I understand how to extract the most value from Aeroplan, I'll probably end up as a 75K Elite / Star Alliance Gold by the end of this year.
A real question for me is whether I should ever aim for WP again. We still have 900K QFF points between us and will need to use them at some point. If classic awards continue to be released in a miserly way by QF, getting back to WP may be necessary purely to request release of award seats!