Aluminum frames are absolutely still a great choice, especially if you're budget-conscious or just getting into road cycling. Modern aluminum alloy frames are far more advanced than the harsh-riding designs from years ago — today's versions offer impressive stiffness for snappy acceleration and climbing, plus they're remarkably durable and resistant to everyday wear and tear.
The main trade-off is ride quality: aluminum doesn't absorb road vibration as well as carbon fiber, so you may feel more buzz on rough pavement over long rides. That's why most aluminum road bikes come paired with a carbon fiber fork, which helps take the edge off up front.
Where aluminum really shines is value. You can often get a well-equipped aluminum bike with quality components for the same price as a lower-spec carbon frame. If you're racing on a budget, building a training bike, or simply want a reliable ride without breaking the bank, aluminum is a smart, practical choice that won't hold you back.