While not to the extent of your rifle, I recently purchased a rifle that was
1- surplus to my needs
2- once equipped with optic will cost about what 3 of my reguoar rifles cost
3- in a caliber that is way too heavy for local game
So guess what I am doing?.... With my collection being downsized I am going to use it for hunts previously out of reach...... And it will have several memories attached to it...... Just looking at it makes me smile and knowing it is a "rare" find makes it even better.... And pride of ownership has value in my book..... I work hard for my money and having a trophy to show to it and indulging yourself keeps you motivated way more than a savage axis and a few K in a bank account......
I will echo Douglas' sentiments in regards to hot rod cars etc...... And will add my own sentiment..... When my first born turned four, I had little money as I had left the military not long before ..... But I bought a small boat and motor because my dad started me out fishing at 4 and I fell in love with the outdoors..... It was an "irresponsible purchase" at the time and I made it anyways...... The boat is long gone, leaked a bit when I bought it...... Leaked a lot when I scrapped it for aluminum value..... And the motor was as old as I was..... The $1500 I spent for them and a crappy trailer is long forgotten..... The week long trip with my boy living out of truck camper and fishing every small rest stop lake along highway 17 will never be...... Everything is relative.....