That might be going too far. I've ridden an aluminum frame for several years and sold it this year. I can't really tell how close it was to EOL but I had it repaired once for a crack at the seat post clamp, and it had another place starting to corrode which I kept repainting to keep it covered, less corrosive. The combination of its condition, the tempting new things on the market, and having some time to play with bike shopping was what prompted me.
Keep your eyes on it and just pick your spot to upgrade it down the road.