Our kitchen counter is 12-inch granite tiles. It appears that the grout may have worn away to some extent in the area near the sink, as shown in the photo. Do we need to have it regrouted? (We are installing a new cooktop, and I am wondering if this is something that should be done first.) Thank you!

ETA: Thanks for the input. We aren't interested in replacing the countertop. If we are going to replace the countertop, we should replace the cabinets, and if we are going to replace the cabinets, we should improve the layout, and we don't have the budget for all that right now! The countertop isn't what I would choose, but it doesn't bother us. The tile and grout appear more black than in the photo, and with such large tile and thin grout lines, it almost looks like a solid granite countertop in person.