Assuming that, nowadays, BTC's hodl could be as long as 5 or even 10 years from now.
How long is a long time hodl in alt-coins?
For example, if I'm looking to hodl ARK/STRAT/XMR, what is the right time-frame? is it just for a few months to a 1 year, or can I leave them for 5 years with the hope of weathering the storms and coming out strong?
And besides, do these kind of coins have a 5-10 year lifespan?
i think 1-2 years sometimes, some coins increase a lot after 1 year, look at lbry for example it remined there for one year at very low level after the first pump and now it's increasing, other coin can be pumped after two years like feathercoin or spreadcoin