IMHO a one word answer is needed - Yes.
Did mine about 9 months after PPL and aside from the instrument bit it improved my overall flying so much it was untrue. I was around 100 hours at start of training and struggling with maintaining altitude with any degree of accuracy. IMC training flogged that discipline into me as well as massively professionalising my R/T skills.
As to the instrument flying, the VOR part is only a small part of what is taught. You're learning the ability to fly the plane using only the instruments without visual references, flying on instruments only with some of the instruments malfunctioning, not to mention the ability to let down through cloud and the approaches.
I also find it helpful flying IFR in VMC when doing X country flights. It seems (this may just be an impression though) that when asking for Class D airspace clearance under IFR it is more likely to be given than VFR.
The other thing it has done for me is to open the sky on days when it might have been marginal as to VMC.
Do it, you never know when the skills might save your life.