I'm a .NET guy working in a .NET shop, and Visual Studios is part and parcel for my days. Occasionally I'll flip to Eclipse for php and java work, but any more VS is getting better about dealing with the those too so, hopefully, in the near future I won't have to.
At home it's VS as well - typically for my python and other side work.
With the wave of plugins and templates available - as well as an ever expanding reach for new languages bolted in - Visual Studios is becoming hard to beat. Unity support, Minecraft mod support, actual python, web dev, etc. Heck - the Community Edition is now supporting localized reports (for free!) so that's a major plus. Also the snippet system is nice to fill in with repeated code chunks.