I've tried to "futureproof" one too many times in the past. It's a marketing gimmick to get to squeeze a few extra pounds out now when in the future it'll be a case you could stick a new module in the old case, but since everything else is faster you get new everything anyway.

I currently think that unless money is no object just go for things just behind the cutting edge where there is often c. 80%+ performance and often a 50% price reduction.

Things do wear out, and with constant use a 4 year old laptop is well worn.