Buying properties with short remaining land leases.

Guide for Resale Flat Sellers and Buyers.
Reader:
I was looking to buy a shoebox condo until I read your blog. I turned 35 recently and will try to get my own BTO 2 rm HDB flat. This will help me achieve financial freedom earlier. :)
However, a friend (same age) just bought a 40 yro HDB flat. He didn't think age was important but I told him about the lease decay issue. He cannot sell the flat