Land is one of the best investment ever. You are correct the value of land do not depreciate it appreciates over time and even gets higher for how many years. The disadvantage only of landed properties it is not liquid you cannot convert it easily to cash you need to take some extra effort to be able to sell it if you wanted to convert it into cash, or if you are in need of fast cash for emergency situations. But surely landed properties is one of the best investment. But of course as an investor i will not just invest my funds into lots only i will diversify it to other investment that could be easily liquidated i mean i could easily convert it into cash to be able to sustain emergency situations.
Once calling land the best investment, it is not true to say that it is illiquid, your statement seems contradictory. The so-called best investment is a safe investment, the value is always increasing and has quick liquidity. I have never seen anyone have trouble liquidating land unless you sell it for too high of a real value. Land is certainly the best investment, but we shouldn't invest it all, diversity is always needed in the investment arena because the future is unpredictable.