For my bitcoin i'll continue to hold 2 or 3 more years. For altcoins, i'm fixing a target to sell for each altcoin when i buy it, after that i convert it to bitcoin.
So you really have trust more on bitcoins than in altcoins for your long term hold, that's a good idea because bitcoin is more popular and more profitable. Actually, I am really hoping that things will not go the opposite again, as what we have notice, when bitcoin pump, people are transferring their money and they dump their altcoins, that's very sad for me as I am a huge altcoins holders, I hope in the future they will go the same direction.