Should I upgrade my system while losing my hearing?


WOW!!! My system sounds great. Wifey says it sounds great & leave it alone. Yet I believe I know the weak spot in my system and I want to upgrade it (Tonearm). Yet some would say that my amp is weak. Its just a VTA Dynaco ST-70. But Lordy, does it sound good. Even so, I'll probably replace it because the power switch is on the back which makes it hard to get to turn it on *& off.. But then I think of my age (68) in 2 months and my hearing loss and I ask,   does it make sense to upgrade? Should I really spend thousands of $$$$$$ to get a 3-8% improvement? But who's to say it won't be 20%..........25%? And with my hearing loss, will I be able to hear it? I hear music pretty good. Its conversation I don't hear. But I've heard enough conversations , etc anyway. 
I often think about my old step father who often said, "There ain't no fool like an old fool". I think I understand what he meant.. AWW I'm gonna do what I want anyway. Just making conversation. But does it make sense to upgrade my system? Or get hearing aids? Ain't gettin' old fun?

128x128artemus_5
Three of my close friends have had serious hearing problems for years and had given up on hearing aids after trying them when their problems were first diagnosed. But within the last year two of them, both with excellent audio systems, have tried hearing aids again and are thrilled with the recent huge advances in the technology. The hearing aids are controlled from a phone app and can be adjusted to optimize hearing in several kinds of environments, conversation, music, crowded public spaces, etc. It's certainly worth exploring with a qualified audiologist. Having said that, whether that works for you or not, I think you should do the upgrades.
FWIW the hearing loss is a relatively new thing.I had a hearing test 10-12 yrs ago and was in the normal range.  I only recently noticed that I can't hear the conversation on TV as well as I used to do. And yes, I will take care of it.. .....though I wish I could put that hearing aid $$$ into a tonearm.............or .........
Digital hearing aids suck. Better to listen without aids and equalize the system to compensate for your loss.
@goldilocks 
The music sounds fine to me. I know about the hearing loss only from TV conversations which I cannot understand.
Fortunately I don’t know much about hearing loss firsthand but it seems like I’d want the range of sounds that my ears are capable of processing to sound the best. Listen to upgraded equipment and if it doesn't sound better then don't invest more. I know that sounds overly simplified but I’m a simple guy.