Gold vs steel

[pilot_bro]

Hey guys, long time lurker first time poster.

I'm trying to decide on material for my next purchase, either a GMT or Sub. I'm a 26 year old pilot and I see plenty of steel and leather straps on guys I work with, tons of Breitlings and a few Rolexes and X-33's. I guess I'm an oddball with a Speedmaster and an X-33 I bought through Omega's military pilot program.

The GMT has been my grail forever, and now that it's coming close to time to buy I can't decide between steel and TT. I don't want steel because everyone else has steel, and I don't want to be like everyone else. I also already have steel in my Speedy.

Before I get a TT GMT (or Sub, maybe), I wanted to verify or debunk some things I've read about gold bracelets having life spans much less than steel. How much is a TT GMT bracelet to replace (cost isn't an issue I'm just wondering)? How long is that life span if true? Are there any other surprises that come w/ owning gold vs steel?

Thanks guys