I want to support the Monero network and eventually fill a warehouse with miners. Will there ever be a point where the reward for mining is no longer justifiable? For example, before BitCoin split, there was a lot of news saying not to mine BitCoin coins because the time it took mine is not worth the reward.
Edit: Setting aside block reward and money, would/could there be a time when it is no longer possible to mine enough shares to get a coin daily?
Edit 2: I would be mining in a pool. The idea is to buy a high end PC and do GPU mining, use the money from that Miner to buy another miner, then repeat until I have to buy a building to store and run my miners. I'm looking for the long term investment. I don't have two coins to rub together. I'm not worried that it could take years, I would like to know if in 5 or 10 years that mining will still be valued and easy as it is today.