When prices are still in bad condition I tend to invest bitcoin for a relatively long duration because when I insisted on utilizing daily investment, it would be difficult to avoid a dump and give a loss.
Those who dont have any trading experience should invest for long time because as you told that daily investment will face a definite dump in the price. To avoid this dump it is necessary to buy bitcoin and hold for long time, till the price doesnt grow more. Smart investors can make daily investment because they know the right time for investment and selling.