For me its depends on what coins you have because there are some old coins that are good for trading, because you can buy a lot of those coins when the price is decreasing and you can have a good profit from those coins when the price increase.
not all old coins are ugly and unprofitable, in some Altcoins there must be old coins that are profitable. if old coins have great potential, it will definitely be profitable and in the future it will be more profitable if you now buy more at low prices. there are some coins that are not profitable but you have to be good at choosing coins that are good for your future.