saya sendiri masih belom menyiapkan usaha gan, tapi kedepannya saya mau ngasih dan ngembangin usaha orang tua saya. karena suatu saat saya yang harus nerusin usaha mereka

yes it can converted to cash.
you can convert it via exchanger, than it will transfer to your account bank

not all coin will survive here.
sometime, they exist and popular in first time the end of ico, and than gone

not surprise. it seem normal for me.
i dont know, but this shit will happen again in next year. break the price before.

I also think like you, I am amazed that many people consider bitcoin as gambling when in bitcoin there is no element of gambling, yes it is not denied on the internet a lot of websites that provide gambling services using cryptocurrency