I work at home. I have an adjustable bench (with attachments for leg curl/extension and preacher curl), power rack with high/low pulley (plate loaded)with several different attachments, adjustable dumbbells, two olympic bars, one standard, two ez curl bars (one olympic, one std), adjustable standard dumbbells, over 600lbs in plates. Oh yeah, and one jump rope. I have a dedicated, finished room in the basement with great lighting, a fridge and stereo.
I'm working on getting a pullup/dip station. I have a ceiling mounted bar and a door-frame dipper, but I haven't been able to use these since my basement was finished last summer.
I have lifted alone for most of my life and I love it. I have belonged to various gyms in the past. I realize there are several advantages to the gyms, but I find it easier to walk down a flight of stairs and get in a workout than to drive for 15 minutes and deal with a bunch of numbskulls and wait for equipment.
I also like being able to bang out a set of OH squats, front squats, mil. press or power cleans, whatever, every time I walk past the room or go into my garage for something (I have the standard bar and a modest amount of weight loaded on it at all times).
I also get my kids into the weight room every so often on weekends.