PS audio new 25K dac and the psychological effect of owning a company's best.

I am grateful for what I have.   Some of it is not  too shabby. 

That "psychological effect" is a highly unstable phenomena! 

There will always be an Obsidian Ted Smith Signature MKII over the horizon. Some people cannot get off the merry-go-round. It is their misfortune to have the money to endlessly chase an unreachable goal.

And in the meantime, what happens to enjoyment of music?  

It seems far wiser to me to emulate mapman:

 "I am grateful for what I have"

If you already have their previous best effort and you are happy with it why upgrade a lot of the top tier gear is just for bragging rights about how much money you spent on it, it is not about getting better sound.

Not in a million year , I owned their top dac and opened the unit up 
cut my finger on the cheap thin sheet metal and inside half empty 
what a joke ,I bought the night and day better built as well as sounding Bricasti M3 dac , with $1k streamer card $6500 retail and made in MA,USA all fully CNC machined Aluminum classic dual classic laser trimmed AD 1955 Multibit dacs , great Direct to Ethernet very quiet and just add a Uptone  audio Ether regen 
right before the Ethernet input and it sounds excellent, stream Roon and  QObuz , a fantastic honest ,naturally sounding dac over 90% of good as their $10 k M1 dac 👍.

This is so far past the 'point of diminishing returns' that a person would have to have other needs to fill other than just enjoying great music. Move the decimal point one place to the left and I might think about it.