A DSLR should be able to make it to 100,000 shots without a problem, most are rated that as their standard life expectancy.
My first DSLR was a new camera, a Canon Rebel T1i, that I purchased the year it was released, 2008, from Best Buy. I sold that one in 2013 when it was around 60,000 shots and bought a used 50D which was at about 50,000 shots when I bought it. I then sold that 50D a little over a year later, in 2014, when it was at 75,000 shots and bought a new 70D.
I will probably have the 70D for about 5 years until it breaks or something significantly better comes out.