How is it going to lower prices? Mining just slows the creation of new bitcoin...the usefulness of it and the short supply is what gives it is market value...I'd imagine it would rise since they'd be more scarce.
Not correct. The bitcoin network self-adjusts to keep the creation of new bitcoin on schedule. From an investor's point of view, the creation of new bitcoin has a known, tightly self-regulated rate of creation.
That's technically not correct either. On average 25 bitcoins are created every 10 minutes however that doesn't mean we can't find 5 blocks in 5 minutes adding 125 bitcoins in 5 minutes (Unlikely but possible). It's designed that on average it should be close to 10 minutes but that's not always true. To call it tightly regulated is a bit of an overstatement - it can be a lot quicker or a lot slower.