The F35 won't be around that long. Unmanned aircraft technology is developing fast and I think the Obama administration is more interested in unmanned programmes and hyper sonic weapons development.
More and more air to ground ops are being done by more capable drones. Even the Royal Navy in 2012 was talking about having Unmanned military aircraft on their carriers with the F35s. When even the RN is talking about Unmanned planes on their carriers we know the F35 will be obsolete within the lifetime of even older guys on this website.
Can I borrow that crystal ball of yours?
The same was said about manned fighters in the '50s and led for example to the cancellation of the Avro Arrow.
Drones are very good, but still very limited in the sort of operations they can be used for. It's going to take several decades at least to get a drone which can do everything - including air-to-air combat - a modern-day fighter-bomber can do.
The British are only talking of using UAVs
in addition to manned fighterbombers such as the F-35B on their carriers or in their airforce which is not strange at all. Many navies operate UAV's on their ships - and not just on carriers -and have been doing so for quite a long time.
However there is no plan whatsoever to replace the F-35B with a drone within the next 30+ years. I'm not sure if that's within the lifetime of the older guys on this forum.
Apples and oranges...
Actually I think that especially in low intensity conflicts drones will be more popular. Less air defenses mean less requirements. Not to mention that it is easier to maintain a fleet of drones since they don't need non stop flight training unlike human pilotes
A big disadvantage, especially in the days of the creditcrunch, is that drones have a very high lossrate and get replaced very quickly due to fast changes in UAV technology. For example the Dutch military is already replacing it's Sperwer UAV's for ScanEagles although the first are still only 5 years old at most. Quite a few were lost on operations in Afghanistan (effectively a low-intensity conflict with relatively low risks for air units) while I can't remember the last time the Dutch lost a manned fighter during operations abroad.