I guess Im an anomaly bc I don't feel I've sacrificed a lot to diving
Im an "economical" diver, so I didn't sacrifice too much cash getting geared up - I'd say about $2000 total, most of that 10 yrs ago, and the gear still works (altho at the time that $$ did feel like a big sacrifice).
My wife doesn't dive, so I don't do dive-centric vacations - I just steal away a few mornings to fit in 2 tanks of diving. Although Ive had to sacrifice diving sometimes, like when we went to her native El Salvador - 85 deg F ocean temp, but no diving (its surf territory).
Every month or so, I sacrifice hoops or taking the dogs on a hike (my usual weekend activities) to go to Monterey/Carmel to dive. I guess it helps that my other pursuits (hoops, my pooches) aren't spendy pastimes.