It will be very hard to mine last bitcoins at my opinion, cause contest will be very big and everybody will start adding more and more hardware to get it.
yeah, people will invest in hardware to mine bitcoins regularly in order to not drop out of the business because it will require some serious stuff in order to make profit
Yeah that's for sure but only if the bitcoin price will be so high ! and mining will be worthy for them. as the complexity of mining will be the maximum at that time they need to add more hardware so more cost for them and more electricity off course so if the price of bitcoin wont be so high no onw will invest to mine more bitcoins !