In general, in period gaming just has a better feel for me, but I'd rather play WAB against an out-of-period army than not play at all. Most armies of the period 500BC-AD1000 will do OK against each other, but pitting an ancient army against a high or late mediaeval army presents problems (plate armour, lances, longbows, gunpowder - things to which ancient armies tend not to have much of an answer). Everybody has different preferences for points values; some people like big set piece games with lots of troops, while others prefer smaller games which leave more room on the table for manoeuvre. On a 6 foot table I like to play 1500-1600 points though I know other gamers are happy to play 2000 (points values depend on whether you're using armies from the rulebook and supplements or from the new Armies of Antiquity; the 2000 points I quoted above equates to 3000 points in Armies of Antiquity).
As a starting point, if you're struggling to find other ancients gamers I'd collect two small armies from the same time period and try to persuade gaming friends to give them a try. That sort of approach worked for me two years ago when I joined a new club - one member had an unused Samurai army and playing a game against him generated a lot of interest, to the point where I can play WAB most weeks. Round here a lot of existing WHFB players have become extremely disillusioned with both the latest edition and the cost of GW models and have jumped at the chance to play WAB. Mention the lack of a magic phase and overpowered horde units and the inclusion of proper manoeuvre and terrain rules, combined with the prospect of fielding a decent sized army for well under £100 (or US equivalent)!