This has always been my thought as well. I never considered races in D&D as analogs of real world races and physical limitations and advantages seemed logical to me. People demand and seek immersion but it's jarring to me that a halfling with strength 20 can lift and carry the same as a half orc with strength 20. But clearly I am in the minority here.
It is a bit unrealistic, but what is the solution? Should halflings be limited to a maximum strength of 16 or 18? Or be allowed to have STR 20, but have disadvantage on all STR checks (including str-based weapon attacks)?
These changes would make the races more 'realistic', but they come at a high cost for player options.
A sacrifice that I personally, am perfectly fine with making.
