I lately wonder why I’m an Audiophile.

In addition to yourself, who else has labeled you “audiophile?”  You might be the only member of your club, in which case you are more than entitled to create endless meaningless distinctions.  Carry on, sir.

You don't have to obsess over sound quality to be an audiophile.  If you care about good sound and work on a system to provide good sound, you're an audiophile, no matter what level your system is at.

You're back on the right track now. Audiophilia is about enjoying music, so keep on enjoying!

Any pursuit can become an obsession.  Now that you know that watch out for it and stop yourself before a different pursuit becomes a problem.  You can do a lot worse than obsessing over sound.

Listening to sound qualities of one's carefully curated system should be enjoyable, I don't feel the need to ignore it, I also very much enjoy the music. Perhaps its a learned skill to happily allow both listening modes to coexist. The only times I'm able to completely ignore sound quality is when listening to my mid fi work system and car systems. While I''m content listening to mediocre or lesser systems I derive much more pleasure from my audiophile system, the added bonus of fine sound quality adds much to my pleasure. 

I was exactly as the OP  but with no budget devoted to audiophilia save very low cost...

I learned acoustics and many "tweaks"...

i am lucky in a way, if i had money i will had bought a very costlier system, i would had learn nothing  and i will waiting with  my 50,000 bucks system to be upgraded by a 100,000 bucks one...

Now after learning i am in heaven with a low cost system (1,000 bucks) ...

 Acoustics knowledge rule audio  not prices...

Don’t overthink it. Just do it!