Moorooka has large variation within it - the Clifton Hill area has quiet, leafy, undulating hills, full of beautiful 1920s-30s Queenslanders with views and quite expensive.
South of there between Beaudesert rd and Tarragindi (where I've owned a house for 15 years) is similarly quiet with lots of parks and bike paths, but less up-market and expensive.
Area between Beaudesert & Ipswich roads has lots of unit blocks and townhouses, and varies from quiet and leafy to noisy and laden with traffic fumes.
I lived in Moorooka for 20 years and loved the suburb. However, all things change and I was not happy with how the nature of the suburb was changing - namely houses being demolished and replaced by the 21st century equivalent of the 6 pack blocks of units. It was time to move on for us. It was quite a heart wrenching decision as I had many happy memories of Moorooka but now when I visit I must admit of not having any regrets.
I must say I felt the same way when I first moved into Moorooka. What I realised it is one of the most family friendly and suburban areas in Brisbane.
It neighbours Toohey Forest and Tarragindi, has heeeeeeaps of parks and great people.
Definitely some beautiful spots and really close to the city.
I would agree with the other posts about Ipswich Rd and Beaudesert rd being high traffic areas, besides that it is a relaxing suburb perfect for the family or future families.
Any more questions or concerns about the are please dont hesitate to ask.
The area between Ipswich Rd and Beaudesert Rd is higher density and less preferred for residential homes as it is zoned for Townhouses etc. Clifton Hill is a very popular pocket along with most of the region from Beaudesert Rd to the forest.
Lots of car yards, and traffic on Ipswich Road. It is a reasonably industrial area so it is a bit dirty and noisy too.
Hope this helps :)