Just as whacking a tennis ball isn't supposed to be tennis - it is well worthwhile as a short interlude for relaxation and to help wire up one's reflexes for more articulate brain / hand coordination.
Multiflight - good graphics and pleasant to operate. Windows.
PicaSim - Medium Graphics and has a variety of senarios. Windows.
CRRCSim - crude graphics and GUI. Quite pleasant to use. Linux.
All of them require a bit of fiddling to setup. This is part of the familiarization process and becomes less frustrating every time.