Sometimes...maybe...but less so as time goes by.
My wife is so much into this hobby now and has become so savvy in being able to properly evaluate, describe, research and be knowledgable about realistic current values and buying/selling items...locomotives, rolling stock, accessories, sundries and miscellany, etc., etc., that all is well. And that's just WRT my own stuff.
Besides, after 22+ years of marriage, countless train shows we both have wandered, multiple York meets, a good eye for spotting deals and the honing of a great haggle, SHE's proudly acquired a fair portion of that 'collection' in the basement per her own interests, on shelves throughout the house, treasures on the layout, etc.
So, what?.....I should worry, be remorseful, have regrets, ...even blush?????
Nahhhhhh.
All's well. All's fun. For both of us.
KD