Since collection size may have a bearing on family reaction, mine is currently around 50-55 plants, grown outdoors in summer, and now under lights in the house. It has probably doubled in size in the past 6 months.
My husband is supportive, my son doesn't say a whole lot, and my daughter doesn't think orchids are "all that pretty" but she is "glad you have a hobby, mom". I'm pretty sure my friends think I am a bit obssessed, and one says "you do realize that you've replaced your daughter (a freshman off at college this year) with orchids, don't you?" But at least she says it with a laugh. She's partly right..although I have loved orchids for years & always had a few, I do have more time for orchids now that my daughter & her friends (many of whom were in my Scout troop) are off to college.