I have a few bikes in my coral, and about 3 of those are Walmart bikes. They are a cheap FS Mtb, a Cruiser and a better DS Mtb. I bought them specifically for rides with my GF or casual relaxing rides and they have worked just fine. I do maintain them well and they serve a purpose.

So, given that you are buying one knowing they need maintenance before you ever ride one, won't be doing long or serious rides and just looking for a basic affordable bike, then "yes", they are worth considering. Search the Walmart website for a bigger list of available bikes and markdowns. If you can't assemble a bike yourself, take it to a bike shop for a full service before you ride it.

Here's the "but"...... Try looking on CL for a decent used bike first before you buy a new Walmart bike. You could end up with a much better bike for the same cash