Only Once ...
The wonderful thing about sunsets is we get a brand new and completely unique one every single day.
The sad thing about sunsets is you will never see another one just like the one you saw tonight.
So many times I find myself watching an amazing sunset unfold and not being able to photograph it. Maybe I might have even lamented to a nearby sympathetic ear on the lost moment.
Almost without a second thought the response comes back, "there will always be another". Perhaps if they had lingered on that thought a moment longer they would have realised that there never will be.