Currently (pun intended) lead-acid batteries are rated for ten years of useful life. If maintained properly they may last even longer. PV panels can last more than 20 years (perhaps way longer).
It's the payback period that makes it work. Hawaii Electric Light Company (HELCO) charged me 48₵ per kWh on my last bill. 756 kWh cost me $363. Can you live on 756 kWh/month?
At that rate, and with tax incentives, it doesn't take long to pay off PV panels, batteries and an inverter.
On sunny days we often over-generate what we are using and can store in our batteries. Plus, lead-acid batteries are ineffcient, and pretty nasty technology. PV to hydrogen into fuel cells (just like the space shuttle) back to electricity (and pure water) has promise, albeit expensive promise at this time.
Another path along the same lines is hydrogen to fuel an (polution free) internal combustion engine that turns a generator, or hydrogen as a fuel for a combustion turbine generator... Space shuttle main engines were hydrogen combustion powered.
A big problem with that is H2 is it is a really small molecule and can leak through some really small spaces when in pressurized storage.
But again I say, biodiesel produced by algae storing energy from the sun in fatty acids is the future.