I use them as a share substitute for leverage or to reduce my committed capital. I might pick an entry point where premium + intrinsic value = half the share price, and either buy twice the number of options as I sold shares, or the same number with half the cash off the table. If the contracts are two years out to maturity I have that much time to raise the capital, or to sell off some contracts to raise capital. I try to ladder options in strike price and expiration to smooth things out.
I specifically DO NOT want to lower my cost basis over time; I want to realize gains and pay taxes in a managed fashion. This isn't necessarily the best tax strategy, but it helps to even out income over time and make sure that I always have some gains in the lower tax brackets. I make sure most of the gains are long-term (again, trading around a position). This helps to free up capital for opportunistic investing.