Electrics are not obtrusive and noisy like most gas-engined planes.
Electrics are convenient and easy to maintain.
No need for electric starters, glo-plugs, or fuel pumps, or needle valve wrenches. No perpetual fiddling to get the engine running reliably. No engine failures at unexpected or inopportune times. Like all things in life, there's no free lunch. In order to achieve the same actual perceived power when flying, it is necessary to build the aircraft structure much lighter and use lighter radio components.